22523229 has 6 divisors (see below), whose sum is σ = 32533566. Its totient is φ = 15015480.

The previous prime is 22523219. The next prime is 22523231. The reversal of 22523229 is 92232522.

It can be written as a sum of positive squares in only one way, i.e., 16892100 + 5631129 = 4110^2 + 2373^2 .

It is not a de Polignac number, because 22523229 - 2⁵ = 22523197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22523209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1251282 + ... + 1251299.

It is an arithmetic number, because the mean of its divisors is an integer number (5422261).

Almost surely, 2^22523229 is an apocalyptic number.

It is an amenable number.

22523229 is a deficient number, since it is larger than the sum of its proper divisors (10010337).

22523229 is a wasteful number, since it uses less digits than its factorization.

22523229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502587 (or 2502584 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 22523229 is about 4745.8644101997. The cubic root of 22523229 is about 282.4079278097.

The spelling of 22523229 in words is "twenty-two million, five hundred twenty-three thousand, two hundred twenty-nine".