22465165 has 4 divisors (see below), whose sum is σ = 26958204. Its totient is φ = 17972128.

The previous prime is 22465153. The next prime is 22465193. The reversal of 22465165 is 56156422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11269449 + 11195716 = 3357^2 + 3346^2 .

It is a cyclic number.

It is not a de Polignac number, because 22465165 - 2⁵ = 22465133 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246512 + ... + 2246521.

It is an arithmetic number, because the mean of its divisors is an integer number (6739551).

Almost surely, 2^22465165 is an apocalyptic number.

It is an amenable number.

22465165 is a deficient number, since it is larger than the sum of its proper divisors (4493039).

22465165 is an equidigital number, since it uses as much as digits as its factorization.

22465165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493038.

The product of its digits is 14400, while the sum is 31.

The square root of 22465165 is about 4739.7431365001. The cubic root of 22465165 is about 282.1650401219.

The spelling of 22465165 in words is "twenty-two million, four hundred sixty-five thousand, one hundred sixty-five".