57079681 has 4 divisors (see below), whose sum is σ = 57767472. Its totient is φ = 56391892.

The previous prime is 57079663. The next prime is 57079717. The reversal of 57079681 is 18697075.

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 57079681 - 2¹⁷ = 56948609 is a prime.

It is a super-2 number, since 2×57079681² = 6516179966123522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57079651) 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, 343771 + ... + 343936.

It is an arithmetic number, because the mean of its divisors is an integer number (14441868).

Almost surely, 2^57079681 is an apocalyptic number.

It is an amenable number.

57079681 is a deficient number, since it is larger than the sum of its proper divisors (687791).

57079681 is an equidigital number, since it uses as much as digits as its factorization.

57079681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687790.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 57079681 is about 7555.1095954989. The cubic root of 57079681 is about 385.0293585303.

The spelling of 57079681 in words is "fifty-seven million, seventy-nine thousand, six hundred eighty-one".