22523223 has 16 divisors (see below), whose sum is σ = 30514176. Its totient is φ = 14776320.

The previous prime is 22523219. The next prime is 22523231. The reversal of 22523223 is 32232522.

It is not a de Polignac number, because 22523223 - 2² = 22523219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22523223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22523243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87511 + ... + 87767.

It is an arithmetic number, because the mean of its divisors is an integer number (1907136).

Almost surely, 2^22523223 is an apocalyptic number.

22523223 is a deficient number, since it is larger than the sum of its proper divisors (7990953).

22523223 is a wasteful number, since it uses less digits than its factorization.

22523223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614.

The product of its digits is 1440, while the sum is 21.

The square root of 22523223 is about 4745.8637780703. The cubic root of 22523223 is about 282.4079027326.

Adding to 22523223 its reverse (32232522), we get a palindrome (54755745).

The spelling of 22523223 in words is "twenty-two million, five hundred twenty-three thousand, two hundred twenty-three".