57979 has 4 divisors (see below), whose sum is σ = 59584. Its totient is φ = 56376.

The previous prime is 57977. The next prime is 57991. The reversal of 57979 is 97975.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57979 - 2¹ = 57977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1567 = 57979 / (5 + 7 + 9 + 7 + 9).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57973) 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, 747 + ... + 820.

It is an arithmetic number, because the mean of its divisors is an integer number (14896).

2⁵⁷⁹⁷⁹ is an apocalyptic number.

57979 is a deficient number, since it is larger than the sum of its proper divisors (1605).

57979 is a wasteful number, since it uses less digits than its factorization.

57979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604.

The product of its digits is 19845, while the sum is 37.

The square root of 57979 is about 240.7882887518. The cubic root of 57979 is about 38.7040940947.

The spelling of 57979 in words is "fifty-seven thousand, nine hundred seventy-nine".