57287 has 2 divisors, whose sum is σ = 57288. Its totient is φ = 57286.

The previous prime is 57283. The next prime is 57301. The reversal of 57287 is 78275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57287 - 2² = 57283 is a prime.

It is a Chen prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28643 + 28644.

It is an arithmetic number, because the mean of its divisors is an integer number (28644).

2⁵⁷²⁸⁷ is an apocalyptic number.

57287 is a deficient number, since it is larger than the sum of its proper divisors (1).

57287 is an equidigital number, since it uses as much as digits as its factorization.

57287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3920, while the sum is 29.

The square root of 57287 is about 239.3470283918. The cubic root of 57287 is about 38.5494950092.

The spelling of 57287 in words is "fifty-seven thousand, two hundred eighty-seven".