57308613 has 8 divisors (see below), whose sum is σ = 77270400. Its totient is φ = 37776288.

The previous prime is 57308609. The next prime is 57308621. The reversal of 57308613 is 31680375.

It is a happy number.

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

It is not a de Polignac number, because 57308613 - 2² = 57308609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57308413) 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, 107053 + ... + 107586.

It is an arithmetic number, because the mean of its divisors is an integer number (9658800).

Almost surely, 2^57308613 is an apocalyptic number.

It is an amenable number.

57308613 is a deficient number, since it is larger than the sum of its proper divisors (19961787).

57308613 is a wasteful number, since it uses less digits than its factorization.

57308613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214731.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 57308613 is about 7570.2452404133. The cubic root of 57308613 is about 385.5434233041.

Adding to 57308613 its reverse (31680375), we get a palindrome (88988988).

The spelling of 57308613 in words is "fifty-seven million, three hundred eight thousand, six hundred thirteen".