22564533 has 16 divisors (see below), whose sum is σ = 32076800. Its totient is φ = 14068080.

The previous prime is 22564513. The next prime is 22564537. The reversal of 22564533 is 33546522.

It is not a de Polignac number, because 22564533 - 2⁶ = 22564469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22564533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22564537) 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 15 ways as a sum of consecutive naturals, for example, 1998 + ... + 7008.

It is an arithmetic number, because the mean of its divisors is an integer number (2004800).

Almost surely, 2^22564533 is an apocalyptic number.

It is an amenable number.

22564533 is a deficient number, since it is larger than the sum of its proper divisors (9512267).

22564533 is a wasteful number, since it uses less digits than its factorization.

22564533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112.

The product of its digits is 21600, while the sum is 30.

The square root of 22564533 is about 4750.2139951796. The cubic root of 22564533 is about 282.5804527169.

The spelling of 22564533 in words is "twenty-two million, five hundred sixty-four thousand, five hundred thirty-three".