57117613 has 4 divisors (see below), whose sum is σ = 65277280. Its totient is φ = 48957948.

The previous prime is 57117611. The next prime is 57117649. The reversal of 57117613 is 31671175.

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 a cyclic number.

It is not a de Polignac number, because 57117613 - 2¹ = 57117611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57117611) 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, 4079823 + ... + 4079836.

It is an arithmetic number, because the mean of its divisors is an integer number (16319320).

Almost surely, 2^57117613 is an apocalyptic number.

It is an amenable number.

57117613 is a deficient number, since it is larger than the sum of its proper divisors (8159667).

57117613 is an equidigital number, since it uses as much as digits as its factorization.

57117613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8159666.

The product of its digits is 4410, while the sum is 31.

The square root of 57117613 is about 7557.6195326306. The cubic root of 57117613 is about 385.1146293853.

Adding to 57117613 its reverse (31671175), we get a palindrome (88788788).

The spelling of 57117613 in words is "fifty-seven million, one hundred seventeen thousand, six hundred thirteen".