57137686 has 8 divisors (see below), whose sum is σ = 85858344. Its totient is φ = 28518240.

The previous prime is 57137677. The next prime is 57137687. The reversal of 57137686 is 68673175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×57137686² = 6529430322869192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57137687) 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, 23875 + ... + 26158.

It is an arithmetic number, because the mean of its divisors is an integer number (10732293).

Almost surely, 2^57137686 is an apocalyptic number.

57137686 is a deficient number, since it is larger than the sum of its proper divisors (28720658).

57137686 is a wasteful number, since it uses less digits than its factorization.

57137686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50606.

The product of its digits is 211680, while the sum is 43.

The square root of 57137686 is about 7558.9474134961. The cubic root of 57137686 is about 385.1597380664.

The spelling of 57137686 in words is "fifty-seven million, one hundred thirty-seven thousand, six hundred eighty-six".