22501953 has 12 divisors (see below), whose sum is σ = 32587620. Its totient is φ = 14962176.

The previous prime is 22501933. The next prime is 22501961. The reversal of 22501953 is 35910522.

It can be written as a sum of positive squares in 2 ways, for example, as 17040384 + 5461569 = 4128^2 + 2337^2 .

It is not a de Polignac number, because 22501953 - 2⁸ = 22501697 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22501903) 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, 625 + ... + 6737.

It is an arithmetic number, because the mean of its divisors is an integer number (2715635).

Almost surely, 2^22501953 is an apocalyptic number.

It is an amenable number.

22501953 is a deficient number, since it is larger than the sum of its proper divisors (10085667).

22501953 is a wasteful number, since it uses less digits than its factorization.

22501953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528 (or 6525 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 22501953 is about 4743.6223500612. The cubic root of 22501953 is about 282.3189766207.

The spelling of 22501953 in words is "twenty-two million, five hundred one thousand, nine hundred fifty-three".