57813 has 8 divisors (see below), whose sum is σ = 88128. Its totient is φ = 33024.

The previous prime is 57809. The next prime is 57829. The reversal of 57813 is 31875.

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

It is not a de Polignac number, because 57813 - 2² = 57809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356 + ... + 1397.

It is an arithmetic number, because the mean of its divisors is an integer number (11016).

2⁵⁷⁸¹³ is an apocalyptic number.

It is an amenable number.

57813 is a deficient number, since it is larger than the sum of its proper divisors (30315).

57813 is a wasteful number, since it uses less digits than its factorization.

57813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763.

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

The square root of 57813 is about 240.4433405191. The cubic root of 57813 is about 38.6671208164.

Adding to 57813 its product of digits (840), we get a triangular number (58653 = T₃₄₂).

The spelling of 57813 in words is "fifty-seven thousand, eight hundred thirteen".