22591161 has 12 divisors (see below), whose sum is σ = 33326592. Its totient is φ = 14740056.

The previous prime is 22591139. The next prime is 22591169. The reversal of 22591161 is 16119522.

It is not a de Polignac number, because 22591161 - 2⁶ = 22591097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22591169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26281 + ... + 27126.

It is an arithmetic number, because the mean of its divisors is an integer number (2777216).

Almost surely, 2^22591161 is an apocalyptic number.

It is an amenable number.

22591161 is a deficient number, since it is larger than the sum of its proper divisors (10735431).

22591161 is a wasteful number, since it uses less digits than its factorization.

22591161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53460 (or 53457 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 22591161 is about 4753.0159898742. The cubic root of 22591161 is about 282.6915650596.

The spelling of 22591161 in words is "twenty-two million, five hundred ninety-one thousand, one hundred sixty-one".