57981313 has 8 divisors (see below), whose sum is σ = 62572608. Its totient is φ = 53408784.

The previous prime is 57981307. The next prime is 57981337. The reversal of 57981313 is 31318975.

It is a happy number.

57981313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 57981313 - 2⁵ = 57981281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57984313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2106 + ... + 10972.

It is an arithmetic number, because the mean of its divisors is an integer number (7821576).

Almost surely, 2^57981313 is an apocalyptic number.

It is an amenable number.

57981313 is a deficient number, since it is larger than the sum of its proper divisors (4591295).

57981313 is a wasteful number, since it uses less digits than its factorization.

57981313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9383.

The product of its digits is 22680, while the sum is 37.

The square root of 57981313 is about 7614.5461453720. The cubic root of 57981313 is about 387.0460877170.

The spelling of 57981313 in words is "fifty-seven million, nine hundred eighty-one thousand, three hundred thirteen".