22957 has 4 divisors (see below), whose sum is σ = 25056. Its totient is φ = 20860.

The previous prime is 22943. The next prime is 22961. The reversal of 22957 is 75922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22957 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 2¹³ + 9⁴ + 5 + 7 .

It is a Duffinian number.

22957 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22907) 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, 1033 + ... + 1054.

It is an arithmetic number, because the mean of its divisors is an integer number (6264).

2²²⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

22957 is a deficient number, since it is larger than the sum of its proper divisors (2099).

22957 is a wasteful number, since it uses less digits than its factorization.

22957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098.

The product of its digits is 1260, while the sum is 25.

The square root of 22957 is about 151.5156757567. The cubic root of 22957 is about 28.4209360932.

It can be divided in two parts, 22 and 957, that added together give a palindrome (979).

The spelling of 22957 in words is "twenty-two thousand, nine hundred fifty-seven".