22552613 has 4 divisors (see below), whose sum is σ = 22978188. Its totient is φ = 22127040.

The previous prime is 22552609. The next prime is 22552619. The reversal of 22552613 is 31625522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17322244 + 5230369 = 4162^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 22552613 - 2² = 22552609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22552619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212708 + ... + 212813.

It is an arithmetic number, because the mean of its divisors is an integer number (5744547).

Almost surely, 2^22552613 is an apocalyptic number.

It is an amenable number.

22552613 is a deficient number, since it is larger than the sum of its proper divisors (425575).

22552613 is an equidigital number, since it uses as much as digits as its factorization.

22552613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425574.

The product of its digits is 3600, while the sum is 26.

The square root of 22552613 is about 4748.9591491189. The cubic root of 22552613 is about 282.5306850528.

The spelling of 22552613 in words is "twenty-two million, five hundred fifty-two thousand, six hundred thirteen".