22510961 has 6 divisors (see below), whose sum is σ = 24743586. Its totient is φ = 20464400.

The previous prime is 22510949. The next prime is 22510963. The reversal of 22510961 is 16901522.

It can be written as a sum of positive squares in only one way, i.e., 16654561 + 5856400 = 4081^2 + 2420^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22510961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22510961.

It is not an unprimeable number, because it can be changed into a prime (22510963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92900 + ... + 93141.

It is an arithmetic number, because the mean of its divisors is an integer number (4123931).

Almost surely, 2^22510961 is an apocalyptic number.

It is an amenable number.

22510961 is a deficient number, since it is larger than the sum of its proper divisors (2232625).

22510961 is a wasteful number, since it uses less digits than its factorization.

22510961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186063 (or 186052 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 22510961 is about 4744.5717404208. The cubic root of 22510961 is about 282.3566443150.

The spelling of 22510961 in words is "twenty-two million, five hundred ten thousand, nine hundred sixty-one".