57137969 has 32 divisors (see below), whose sum is σ = 72576000. Its totient is φ = 44782080.

The previous prime is 57137939. The next prime is 57137987. The reversal of 57137969 is 96973175.

It is a happy number.

It is not a de Polignac number, because 57137969 - 2²⁴ = 40360753 is a prime.

It is a super-2 number, since 2×57137969² = 6529495002889922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57137939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238952 + ... + 239190.

It is an arithmetic number, because the mean of its divisors is an integer number (2268000).

Almost surely, 2^57137969 is an apocalyptic number.

It is an amenable number.

57137969 is a deficient number, since it is larger than the sum of its proper divisors (15438031).

57137969 is a wasteful number, since it uses less digits than its factorization.

57137969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 304 counting only the distinct ones).

The product of its digits is 357210, while the sum is 47.

The square root of 57137969 is about 7558.9661330105. The cubic root of 57137969 is about 385.1603739574.

The spelling of 57137969 in words is "fifty-seven million, one hundred thirty-seven thousand, nine hundred sixty-nine".