22252813 has 16 divisors (see below), whose sum is σ = 25933824. Its totient is φ = 18869760.

The previous prime is 22252793. The next prime is 22252829. The reversal of 22252813 is 31825222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22252813 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 (22252883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23281 + ... + 24217.

It is an arithmetic number, because the mean of its divisors is an integer number (1620864).

Almost surely, 2^22252813 is an apocalyptic number.

It is an amenable number.

22252813 is a deficient number, since it is larger than the sum of its proper divisors (3681011).

22252813 is a wasteful number, since it uses less digits than its factorization.

22252813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092.

The product of its digits is 1920, while the sum is 25.

The square root of 22252813 is about 4717.2887340081. The cubic root of 22252813 is about 281.2731689226.

It can be divided in two parts, 222 and 52813, that added together give a palindrome (53035).

The spelling of 22252813 in words is "twenty-two million, two hundred fifty-two thousand, eight hundred thirteen".