#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <numeric>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;

int zero, one = !zero;

void inc(int& i) {
    for (int m = one;; m <<= one) {
        i ^= m;
        if (i & m) break;
    }
}

int main() {
    int n;
    cin >> n;

    bool b = n > one;
    for (int i = one << one; i < n; inc(i)) {
        if (!(n % i)) b = false;
    }

    cout << (b ? "YES" : "NO") << endl;

    return zero;
}