#include <bits/stdc++.h>
using namespace std;

int main()
{
    const vector<int> prime = { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61 };
    const vector<int> square = { 4, 9, 16, 25, 36, 49 };
    const vector<int> cube = { 8, 27 };
    const vector<int> perfect = { 6, 28 };
    int n;
    cin >> n;
    if (find(prime.begin(), prime.end(), n) != prime.end()) {
        cout << "素数!" << endl;
    } else if (find(square.begin(), square.end(), n) != square.end()) {
        cout << "平方数!" << endl;
    } else if (find(cube.begin(), cube.end(), n) != cube.end()) {
        cout << "立方数!" << endl;
    } else if (find(perfect.begin(), perfect.end(), n) != perfect.end()) {
        cout << "完全数!" << endl;
    } else {
        cout << n << endl;
    }
}