57642513 has 8 divisors (see below), whose sum is σ = 77141376. Its totient is φ = 38286000.

The previous prime is 57642509. The next prime is 57642521. The reversal of 57642513 is 31524675.

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

It is not a de Polignac number, because 57642513 - 2² = 57642509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57642553) 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, 34638 + ... + 36263.

It is an arithmetic number, because the mean of its divisors is an integer number (9642672).

Almost surely, 2^57642513 is an apocalyptic number.

It is an amenable number.

57642513 is a deficient number, since it is larger than the sum of its proper divisors (19498863).

57642513 is a wasteful number, since it uses less digits than its factorization.

57642513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71175.

The product of its digits is 25200, while the sum is 33.

The square root of 57642513 is about 7592.2666575931. The cubic root of 57642513 is about 386.2907440183.

The spelling of 57642513 in words is "fifty-seven million, six hundred forty-two thousand, five hundred thirteen".