22566157 has 16 divisors (see below), whose sum is σ = 24855552. Its totient is φ = 20401920.

The previous prime is 22566149. The next prime is 22566163. The reversal of 22566157 is 75166522.

It is a cyclic number.

It is not a de Polignac number, because 22566157 - 2³ = 22566149 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 (22566107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48508 + ... + 48970.

It is an arithmetic number, because the mean of its divisors is an integer number (1553472).

Almost surely, 2^22566157 is an apocalyptic number.

It is an amenable number.

22566157 is a deficient number, since it is larger than the sum of its proper divisors (2289395).

22566157 is a wasteful number, since it uses less digits than its factorization.

22566157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its digits is 25200, while the sum is 34.

The square root of 22566157 is about 4750.3849317713. The cubic root of 22566157 is about 282.5872317869.

The spelling of 22566157 in words is "twenty-two million, five hundred sixty-six thousand, one hundred fifty-seven".