57000287 has 6 divisors (see below), whose sum is σ = 57289248. Its totient is φ = 56712704.

The previous prime is 57000257. The next prime is 57000319. The reversal of 57000287 is 78200075.

It is a de Polignac number, because none of the positive numbers 2^k-57000287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57000217) 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, 65618 + ... + 66480.

It is an arithmetic number, because the mean of its divisors is an integer number (9548208).

Almost surely, 2^57000287 is an apocalyptic number.

57000287 is a deficient number, since it is larger than the sum of its proper divisors (288961).

57000287 is an frugal number, since it uses more digits than its factorization.

57000287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1120 counting only the distinct ones).

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

The square root of 57000287 is about 7549.8534422861. The cubic root of 57000287 is about 384.8507590446.

The spelling of 57000287 in words is "fifty-seven million, two hundred eighty-seven", and thus it is an aban number.