#include <iostream>
using namespace std;

int zero = !'a';
int one = !!'a';

int plus_one(int x) {
	int i = one;
	while(x & i) {
		x ^= i;
		i = i << one;
	}
	x |= i;
	return x;
}

int main() {
	int n; cin >> n;
	bool f = (n != one);
	for(int i = one << one; i < n; i = plus_one(i)) {
		if(n % i == zero)
			f = false;
	}
	
	cout << (f ? "YES" : "NO") << '\n';
}