22530502531 has 2 divisors, whose sum is σ = 22530502532. Its totient is φ = 22530502530.

The previous prime is 22530502523. The next prime is 22530502559. The reversal of 22530502531 is 13520503522.

It is an a-pointer prime, because the next prime (22530502559) can be obtained adding 22530502531 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22530502531 - 2³ = 22530502523 is a prime.

It is a super-2 number, since 2×22530502531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22530502531.

It is not a weakly prime, because it can be changed into another prime (22530502571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11265251265 + 11265251266.

It is an arithmetic number, because the mean of its divisors is an integer number (11265251266).

Almost surely, 2^22530502531 is an apocalyptic number.

22530502531 is a deficient number, since it is larger than the sum of its proper divisors (1).

22530502531 is an equidigital number, since it uses as much as digits as its factorization.

22530502531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 28.

Subtracting from 22530502531 its reverse (13520503522), we obtain a palindrome (9009999009).

The spelling of 22530502531 in words is "twenty-two billion, five hundred thirty million, five hundred two thousand, five hundred thirty-one".