57613231 has 4 divisors (see below), whose sum is σ = 62045032. Its totient is φ = 53181432.

The previous prime is 57613223. The next prime is 57613261. The reversal of 57613231 is 13231675.

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 57613231 - 2³ = 57613223 is a prime.

It is a super-2 number, since 2×57613231² = 6638568772518722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57613231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57613261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2215881 + ... + 2215906.

It is an arithmetic number, because the mean of its divisors is an integer number (15511258).

Almost surely, 2^57613231 is an apocalyptic number.

57613231 is a deficient number, since it is larger than the sum of its proper divisors (4431801).

57613231 is a wasteful number, since it uses less digits than its factorization.

57613231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431800.

The product of its digits is 3780, while the sum is 28.

The square root of 57613231 is about 7590.3380030141. The cubic root of 57613231 is about 386.2253219257.

The spelling of 57613231 in words is "fifty-seven million, six hundred thirteen thousand, two hundred thirty-one".