import sys
sys.setrecursionlimit(10**6)

s = list(map(ord, input()))
length = len(s) // 2
s, s_rev = s[:length], s[::-1][:length]
mod = 10**9+7
base = 10
dp = [0]*(length+1)


def rec(i):
    hash_l, hash_r, c_base = 0, 0, 1
    count = 1

    for j in range(i, length):
        hash_l = (hash_l * base + s[j]) % mod
        hash_r = (hash_r + s_rev[j] * c_base) % mod
        c_base = c_base * base % mod
        if hash_l == hash_r:
            count += dp[j+1] or rec(j+1)
            count %= mod

    dp[i] = count % mod
    return dp[i]


print(rec(0))