22957021 has 8 divisors (see below), whose sum is σ = 24417720. Its totient is φ = 21508608.

The previous prime is 22956991. The next prime is 22957027. The reversal of 22957021 is 12075922.

It can be written as a sum of positive squares in 4 ways, for example, as 17264025 + 5692996 = 4155^2 + 2386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22957021 - 2¹⁷ = 22825949 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 (22957027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945 + ... + 6841.

It is an arithmetic number, because the mean of its divisors is an integer number (3052215).

Almost surely, 2^22957021 is an apocalyptic number.

It is an amenable number.

22957021 is a deficient number, since it is larger than the sum of its proper divisors (1460699).

22957021 is a wasteful number, since it uses less digits than its factorization.

22957021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 22957021 is about 4791.3485575566. The cubic root of 22957021 is about 284.2094475923.

It can be divided in two parts, 2295 and 7021, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 22957021 in words is "twenty-two million, nine hundred fifty-seven thousand, twenty-one".