22522613 has 2 divisors, whose sum is σ = 22522614. Its totient is φ = 22522612.

The previous prime is 22522609. The next prime is 22522627. The reversal of 22522613 is 31622522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22344529 + 178084 = 4727^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 22522613 - 2² = 22522609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22522673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11261306 + 11261307.

It is an arithmetic number, because the mean of its divisors is an integer number (11261307).

Almost surely, 2^22522613 is an apocalyptic number.

It is an amenable number.

22522613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22522613 is an equidigital number, since it uses as much as digits as its factorization.

22522613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 22522613 is about 4745.7995111467. The cubic root of 22522613 is about 282.4053532103.

Subtracting 22522613 from its reverse (31622522), we obtain a palindrome (9099909).

The spelling of 22522613 in words is "twenty-two million, five hundred twenty-two thousand, six hundred thirteen".