22532564 has 6 divisors (see below), whose sum is σ = 39431994. Its totient is φ = 11266280.

The previous prime is 22532561. The next prime is 22532581. The reversal of 22532564 is 46523522.

It can be written as a sum of positive squares in only one way, i.e., 14122564 + 8410000 = 3758^2 + 2900^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22532561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2816567 + ... + 2816574.

It is an arithmetic number, because the mean of its divisors is an integer number (6571999).

Almost surely, 2^22532564 is an apocalyptic number.

It is an amenable number.

22532564 is a deficient number, since it is larger than the sum of its proper divisors (16899430).

22532564 is a wasteful number, since it uses less digits than its factorization.

22532564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5633145 (or 5633143 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 22532564 is about 4746.8477961696. The cubic root of 22532564 is about 282.4469381114.

Multiplying 22532564 by its sum of digits (29), we get a palindrome (653444356).

The spelling of 22532564 in words is "twenty-two million, five hundred thirty-two thousand, five hundred sixty-four".