22500931 has 2 divisors, whose sum is σ = 22500932. Its totient is φ = 22500930.

The previous prime is 22500917. The next prime is 22500941. The reversal of 22500931 is 13900522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22500931 - 2⁹ = 22500419 is a prime.

It is a super-2 number, since 2×22500931² = 1012583791733522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22500941) by changing a digit.

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 as a sum of consecutive naturals, namely, 11250465 + 11250466.

It is an arithmetic number, because the mean of its divisors is an integer number (11250466).

Almost surely, 2^22500931 is an apocalyptic number.

22500931 is a deficient number, since it is larger than the sum of its proper divisors (1).

22500931 is an equidigital number, since it uses as much as digits as its factorization.

22500931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 22500931 is about 4743.5146252541. The cubic root of 22500931 is about 282.3147024086.

The spelling of 22500931 in words is "twenty-two million, five hundred thousand, nine hundred thirty-one".