22552144 has 20 divisors (see below), whose sum is σ = 45595296. Its totient is φ = 10785632.

The previous prime is 22552093. The next prime is 22552157. The reversal of 22552144 is 44125522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30274 + ... + 31009.

Almost surely, 2^22552144 is an apocalyptic number.

It is an amenable number.

22552144 is an abundant number, since it is smaller than the sum of its proper divisors (23043152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22552144 is a wasteful number, since it uses less digits than its factorization.

22552144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61314 (or 61308 counting only the distinct ones).

The product of its digits is 3200, while the sum is 25.

The square root of 22552144 is about 4748.9097696208. The cubic root of 22552144 is about 282.5287265538.

Adding to 22552144 its reverse (44125522), we get a palindrome (66677666).

The spelling of 22552144 in words is "twenty-two million, five hundred fifty-two thousand, one hundred forty-four".