22712957 has 2 divisors, whose sum is σ = 22712958. Its totient is φ = 22712956.

The previous prime is 22712953. The next prime is 22712959. The reversal of 22712957 is 75921722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21724921 + 988036 = 4661^2 + 994^2 .

It is a cyclic number.

It is not a de Polignac number, because 22712957 - 2² = 22712953 is a prime.

Together with 22712959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22712953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11356478 + 11356479.

It is an arithmetic number, because the mean of its divisors is an integer number (11356479).

Almost surely, 2^22712957 is an apocalyptic number.

It is an amenable number.

22712957 is a deficient number, since it is larger than the sum of its proper divisors (1).

22712957 is an equidigital number, since it uses as much as digits as its factorization.

22712957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 35.

The square root of 22712957 is about 4765.8112635731. The cubic root of 22712957 is about 283.1986809617.

The spelling of 22712957 in words is "twenty-two million, seven hundred twelve thousand, nine hundred fifty-seven".