22542631 has 2 divisors, whose sum is σ = 22542632. Its totient is φ = 22542630.

The previous prime is 22542623. The next prime is 22542671. The reversal of 22542631 is 13624522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22542631 - 2³ = 22542623 is a prime.

It is a super-2 number, since 2×22542631² = 1016340424804322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22542596 and 22542605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22542601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11271315 + 11271316.

It is an arithmetic number, because the mean of its divisors is an integer number (11271316).

Almost surely, 2^22542631 is an apocalyptic number.

22542631 is a deficient number, since it is larger than the sum of its proper divisors (1).

22542631 is an equidigital number, since it uses as much as digits as its factorization.

22542631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 22542631 is about 4747.9080656643. The cubic root of 22542631 is about 282.4889953162.

The spelling of 22542631 in words is "twenty-two million, five hundred forty-two thousand, six hundred thirty-one".