22252156 has 24 divisors (see below), whose sum is σ = 40615344. Its totient is φ = 10657920.

The previous prime is 22252151. The next prime is 22252157. The reversal of 22252156 is 65125222.

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 22252156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22252151) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7896 + ... + 10336.

It is an arithmetic number, because the mean of its divisors is an integer number (1692306).

Almost surely, 2^22252156 is an apocalyptic number.

It is an amenable number.

22252156 is a deficient number, since it is larger than the sum of its proper divisors (18363188).

22252156 is a wasteful number, since it uses less digits than its factorization.

22252156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541 (or 2539 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 22252156 is about 4717.2190960353. The cubic root of 22252156 is about 281.2704007589.

Adding to 22252156 its reverse (65125222), we get a palindrome (87377378).

The spelling of 22252156 in words is "twenty-two million, two hundred fifty-two thousand, one hundred fifty-six".