22532223 has 32 divisors (see below), whose sum is σ = 36071424. Its totient is φ = 12241152.

The previous prime is 22532207. The next prime is 22532239. The reversal of 22532223 is 32223522.

It is an interprime number because it is at equal distance from previous prime (22532207) and next prime (22532239).

It is not a de Polignac number, because 22532223 - 2⁴ = 22532207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22532223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22532023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36211 + ... + 36827.

It is an arithmetic number, because the mean of its divisors is an integer number (1127232).

Almost surely, 2^22532223 is an apocalyptic number.

22532223 is a deficient number, since it is larger than the sum of its proper divisors (13539201).

22532223 is a wasteful number, since it uses less digits than its factorization.

22532223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711.

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

The square root of 22532223 is about 4746.8118774605. The cubic root of 22532223 is about 282.4455132862.

Adding to 22532223 its reverse (32223522), we get a palindrome (54755745).

The spelling of 22532223 in words is "twenty-two million, five hundred thirty-two thousand, two hundred twenty-three".