57651979 has 12 divisors (see below), whose sum is σ = 73162008. Its totient is φ = 44923200.

The previous prime is 57651977. The next prime is 57651983. The reversal of 57651979 is 97915675.

It is not a de Polignac number, because 57651979 - 2¹ = 57651977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57651977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52942 + ... + 54019.

It is an arithmetic number, because the mean of its divisors is an integer number (6096834).

Almost surely, 2^57651979 is an apocalyptic number.

57651979 is a deficient number, since it is larger than the sum of its proper divisors (15510029).

57651979 is a wasteful number, since it uses less digits than its factorization.

57651979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106986 (or 106979 counting only the distinct ones).

The product of its digits is 595350, while the sum is 49.

The square root of 57651979 is about 7592.8900294947. The cubic root of 57651979 is about 386.3118882968.

It can be divided in two parts, 5765 and 1979, that added together give a square (7744 = 88²).

The spelling of 57651979 in words is "fifty-seven million, six hundred fifty-one thousand, nine hundred seventy-nine".