#include <iostream>
using namespace std;

constexpr int Zero = !'a', One = !Zero;

inline int add_one(int x) {
  int t = One;
  while (x & t) {
    x ^= t;
    t <<= One;
  }
  x ^= t;
  return x;
}

int main() {
  int n;
  cin >> n;
  bool p = (n != One);
  for (int i = One << One; i < n; i = add_one(i)) {
    if (n % i == Zero) p = false;
  }
  cout << (p ? "YES" : "NO") << '\n';
}