22531465 has 16 divisors (see below), whose sum is σ = 29702016. Its totient is φ = 16272000.

The previous prime is 22531433. The next prime is 22531489. The reversal of 22531465 is 56413522.

It is not a de Polignac number, because 22531465 - 2⁵ = 22531433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6949 + ... + 9661.

It is an arithmetic number, because the mean of its divisors is an integer number (1856376).

Almost surely, 2^22531465 is an apocalyptic number.

It is an amenable number.

22531465 is a deficient number, since it is larger than the sum of its proper divisors (7170551).

22531465 is a wasteful number, since it uses less digits than its factorization.

22531465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880.

The product of its digits is 7200, while the sum is 28.

The square root of 22531465 is about 4746.7320337259. The cubic root of 22531465 is about 282.4423460281.

Adding to 22531465 its reverse (56413522), we get a palindrome (78944987).

The spelling of 22531465 in words is "twenty-two million, five hundred thirty-one thousand, four hundred sixty-five".