57318 has 16 divisors (see below), whose sum is σ = 117936. Its totient is φ = 18560.

The previous prime is 57301. The next prime is 57329. The reversal of 57318 is 81375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130 + ... + 362.

It is an arithmetic number, because the mean of its divisors is an integer number (7371).

2⁵⁷³¹⁸ is an apocalyptic number.

57318 is an abundant number, since it is smaller than the sum of its proper divisors (60618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58968).

57318 is a wasteful number, since it uses less digits than its factorization.

57318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279.

The product of its digits is 840, while the sum is 24.

The square root of 57318 is about 239.4117791588. The cubic root of 57318 is about 38.5564472488.

The spelling of 57318 in words is "fifty-seven thousand, three hundred eighteen".