#include <iostream>
#include <vector>
#include <cmath>
using namespace std;

int one = int(true);
int zero = int(false);
int incl(int a) {
	int b = one;
	bool c = true;
	int t = a;
	while(c) {
		if(a & b) {
			t ^= b;
		} else {
			t |= b;
			c = false;
		}
		b <<= one;
	}
	return t;
}


int main() {
	int N;
	cin >> N;
	bool ans = true;
	for(int i = incl(one); i < N; i = incl(i)) {
		if(N % i == zero) ans = false;
	}
	if(N == one) ans = false;
	cout << (ans ? "YES" : "NO") << endl;
	return zero;
}