#include <iostream>
using namespace std;

int main() {
    int N;
    cin >> N;
    int t = true;
    int f = false;
    int two = t << t;
    if (N <= t) {
        cout << "NO\n";
        return f;
    }
    if (N == two) {
        cout << "YES\n";
        return f;
    }
    if (N % two == f) {
        cout << "NO\n";
        return f;
    }
    int current_i = two | t;
    int square = current_i * current_i;
    while (square > f && square <= N) {
        if (N % current_i == f) {
            cout << "NO\n";
            return f;
        }
        current_i += two;
        square = current_i * current_i;
    }
    cout << "YES\n";
    return f;
}