57813213 has 4 divisors (see below), whose sum is σ = 77084288. Its totient is φ = 38542140.

The previous prime is 57813169. The next prime is 57813253. The reversal of 57813213 is 31231875.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57813213 - 2¹² = 57809117 is a prime.

It is the 7604-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57813253) by changing a digit.

It is a nontrivial repunit in base 7603.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9635533 + ... + 9635538.

It is an arithmetic number, because the mean of its divisors is an integer number (19271072).

Almost surely, 2^57813213 is an apocalyptic number.

It is an amenable number.

57813213 is a deficient number, since it is larger than the sum of its proper divisors (19271075).

57813213 is a wasteful number, since it uses less digits than its factorization.

57813213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19271074.

The product of its digits is 5040, while the sum is 30.

The square root of 57813213 is about 7603.5000493194. The cubic root of 57813213 is about 386.6716830337.

The spelling of 57813213 in words is "fifty-seven million, eight hundred thirteen thousand, two hundred thirteen".