57986287 has 4 divisors (see below), whose sum is σ = 58227136. Its totient is φ = 57745440.

The previous prime is 57986281. The next prime is 57986311. The reversal of 57986287 is 78268975.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57986287 - 2²³ = 49597679 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 (57986281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120063 + ... + 120544.

It is an arithmetic number, because the mean of its divisors is an integer number (14556784).

Almost surely, 2^57986287 is an apocalyptic number.

57986287 is a deficient number, since it is larger than the sum of its proper divisors (240849).

57986287 is a wasteful number, since it uses less digits than its factorization.

57986287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240848.

The product of its digits is 1693440, while the sum is 52.

The square root of 57986287 is about 7614.8727500858. The cubic root of 57986287 is about 387.0571551460.

The spelling of 57986287 in words is "fifty-seven million, nine hundred eighty-six thousand, two hundred eighty-seven".