#include <iostream>
#include <vector>

using namespace std;

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

	vector<int> v(n);
	if (next(v.begin()) == v.end()) {
		cout << "NO" << endl;
		return n % n;
	}

	for (auto it = next(next(v.begin())); it != v.end(); it = next(it)) {
		if (!(n % distance(v.begin(), it))) {
			cout << "NO" << endl;
			return n % n;
		}
	}
	cout << "YES" << endl;
	return n % n;
}