22551957 has 6 divisors (see below), whose sum is σ = 32575062. Its totient is φ = 15034632.

The previous prime is 22551941. The next prime is 22551959. The reversal of 22551957 is 75915522.

It can be written as a sum of positive squares in only one way, i.e., 18714276 + 3837681 = 4326^2 + 1959^2 .

It is not a de Polignac number, because 22551957 - 2⁴ = 22551941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22551959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1252878 + ... + 1252895.

It is an arithmetic number, because the mean of its divisors is an integer number (5429177).

Almost surely, 2^22551957 is an apocalyptic number.

It is an amenable number.

22551957 is a deficient number, since it is larger than the sum of its proper divisors (10023105).

22551957 is a wasteful number, since it uses less digits than its factorization.

22551957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505779 (or 2505776 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 22551957 is about 4748.8900808505. The cubic root of 22551957 is about 282.5279456522.

The spelling of 22551957 in words is "twenty-two million, five hundred fifty-one thousand, nine hundred fifty-seven".