22951257 has 12 divisors (see below), whose sum is σ = 35598096. Its totient is φ = 13114920.

The previous prime is 22951223. The next prime is 22951283. The reversal of 22951257 is 75215922.

It is a happy number.

It is not a de Polignac number, because 22951257 - 2⁶ = 22951193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22951157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77919 + ... + 78212.

It is an arithmetic number, because the mean of its divisors is an integer number (2966508).

Almost surely, 2^22951257 is an apocalyptic number.

It is an amenable number.

22951257 is a deficient number, since it is larger than the sum of its proper divisors (12646839).

22951257 is a wasteful number, since it uses less digits than its factorization.

22951257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156148 (or 156141 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 22951257 is about 4790.7470189940. The cubic root of 22951257 is about 284.1856593668.

The spelling of 22951257 in words is "twenty-two million, nine hundred fifty-one thousand, two hundred fifty-seven".