22551065 has 8 divisors (see below), whose sum is σ = 27095688. Its totient is φ = 18017920.

The previous prime is 22551059. The next prime is 22551079. The reversal of 22551065 is 56015522.

It can be written as a sum of positive squares in 4 ways, for example, as 6901129 + 15649936 = 2627^2 + 3956^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22551065 - 2⁸ = 22550809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2309 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (3386961).

Almost surely, 2^22551065 is an apocalyptic number.

It is an amenable number.

22551065 is a deficient number, since it is larger than the sum of its proper divisors (4544623).

22551065 is an equidigital number, since it uses as much as digits as its factorization.

22551065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 22551065 is about 4748.7961632397. The cubic root of 22551065 is about 282.5242206503.

Adding to 22551065 its reverse (56015522), we get a palindrome (78566587).

The spelling of 22551065 in words is "twenty-two million, five hundred fifty-one thousand, sixty-five".