import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.NoSuchElementException;

class Main {
	public static void main(String[] args) {
		// long time = System.currentTimeMillis();
		new Main().run();
		// System.err.println(System.currentTimeMillis() - time);
	}

	final long MOD = 1_000_000_000 + 7;

	void run() {
		Scanner sc = new Scanner();
		String s = sc.next();
		int n = s.length();
		long[] f = new long[(n + 1) / 2];
		Arrays.fill(f, 1);
		for (int i = 0; i < (n + 1) / 2; ++i) {
			String t = s.substring((n - 1) / 2 - i, n / 2 + i + 1);
			int pos = i;
			int[] h = zalgo(t);
			for (int j = (t.length() + 1) / 2; j < t.length(); ++j) {
				int len = t.length() - j;
				if (h[j] != len)
					continue;
				if (pos - len == -1) {
					f[pos] = (f[pos] + 1);
				} else
					f[pos] = (f[pos] + f[pos - len]);
				if (f[pos] >= MOD)
					f[pos] -= MOD;
			}
		}
		System.out.println(f[f.length - 1]);
	}

	int[] zalgo(String s) {
		int n = s.length();
		int[] ret = new int[n];
		ret[0] = n;
		int i = 1, j = 0;
		while (i < n) {
			while (i + j < n && s.charAt(j) == s.charAt(i + j))
				++j;
			ret[i] = j;
			if (j == 0) {
				++i;
				continue;
			}
			int k = 1;
			while (i + k < n && k + ret[k] < j) {
				ret[i + k] = ret[k];
				++k;
			}
			i += k;
			j -= k;
		}
		return ret;
	}

	class Scanner {
		private final InputStream in = System.in;
		private final byte[] buffer = new byte[1024];
		private int ptr = 0;
		private int buflen = 0;

		private boolean hasNextByte() {
			if (ptr < buflen) {
				return true;
			} else {
				ptr = 0;
				try {
					buflen = in.read(buffer);
				} catch (IOException e) {
					e.printStackTrace();
				}
				if (buflen <= 0) {
					return false;
				}
			}
			return true;
		}

		private int readByte() {
			if (hasNextByte())
				return buffer[ptr++];
			else
				return -1;
		}

		private boolean isPrintableChar(int c) {
			return 33 <= c && c <= 126;
		}

		public boolean hasNext() {
			while (hasNextByte() && !isPrintableChar(buffer[ptr]))
				ptr++;
			return hasNextByte();
		}

		public String next() {
			if (!hasNext())
				throw new NoSuchElementException();
			StringBuilder sb = new StringBuilder();
			int b = readByte();
			while (isPrintableChar(b)) {
				sb.appendCodePoint(b);
				b = readByte();
			}
			return sb.toString();
		}

		public long nextLong() {
			if (!hasNext())
				throw new NoSuchElementException();
			long n = 0;
			boolean minus = false;
			int b = readByte();
			if (b == '-') {
				minus = true;
				b = readByte();
			}
			if (b < '0' || '9' < b) {
				throw new NumberFormatException();
			}
			while (true) {
				if ('0' <= b && b <= '9') {
					n *= 10;
					n += b - '0';
				} else if (b == -1 || !isPrintableChar(b)) {
					return minus ? -n : n;
				} else {
					throw new NumberFormatException();
				}
				b = readByte();
			}
		}

		public int nextInt() {
			long nl = nextLong();
			if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
				throw new NumberFormatException();
			return (int) nl;
		}

		public double nextDouble() {
			return Double.parseDouble(next());
		}
	}

	void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}
}