252222136 has 16 divisors (see below), whose sum is σ = 473340600. Its totient is φ = 125997984.

The previous prime is 252222079. The next prime is 252222151. The reversal of 252222136 is 631222252.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 252222136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4251 + ... + 22858.

Almost surely, 2^252222136 is an apocalyptic number.

It is an amenable number.

252222136 is a deficient number, since it is larger than the sum of its proper divisors (221118464).

252222136 is a wasteful number, since it uses less digits than its factorization.

252222136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28278 (or 28274 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 252222136 is about 15881.5029515471. The cubic root of 252222136 is about 631.8214992876.

Adding to 252222136 its reverse (631222252), we get a palindrome (883444388).

The spelling of 252222136 in words is "two hundred fifty-two million, two hundred twenty-two thousand, one hundred thirty-six".