22921552 has 20 divisors (see below), whose sum is σ = 44613216. Its totient is φ = 11408480.

The previous prime is 22921511. The next prime is 22921601. The reversal of 22921552 is 25512922.

It is a self number, because there is not a number n which added to its sum of digits gives 22921552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477 + ... + 6787.

Almost surely, 2^22921552 is an apocalyptic number.

It is an amenable number.

22921552 is a deficient number, since it is larger than the sum of its proper divisors (21691664).

22921552 is a wasteful number, since it uses less digits than its factorization.

22921552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6546 (or 6540 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 22921552 is about 4787.6457680158. The cubic root of 22921552 is about 284.0630026197.

It can be divided in two parts, 2292 and 1552, that added together give a square (3844 = 62²).

The spelling of 22921552 in words is "twenty-two million, nine hundred twenty-one thousand, five hundred fifty-two".