57187 has 8 divisors (see below), whose sum is σ = 63504. Its totient is φ = 51168.

The previous prime is 57179. The next prime is 57191. The reversal of 57187 is 78175.

It is a happy number.

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

It is not a de Polignac number, because 57187 - 2³ = 57179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648 + ... + 730.

It is an arithmetic number, because the mean of its divisors is an integer number (7938).

2⁵⁷¹⁸⁷ is an apocalyptic number.

57187 is a deficient number, since it is larger than the sum of its proper divisors (6317).

57187 is a wasteful number, since it uses less digits than its factorization.

57187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149.

The product of its digits is 1960, while the sum is 28.

The square root of 57187 is about 239.1380354523. The cubic root of 57187 is about 38.5270513207.

The spelling of 57187 in words is "fifty-seven thousand, one hundred eighty-seven".