57178879 has 2 divisors, whose sum is σ = 57178880. Its totient is φ = 57178878.

The previous prime is 57178873. The next prime is 57178883. The reversal of 57178879 is 97887175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57178879 - 2¹⁷ = 57047807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57178873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28589439 + 28589440.

It is an arithmetic number, because the mean of its divisors is an integer number (28589440).

Almost surely, 2^57178879 is an apocalyptic number.

57178879 is a deficient number, since it is larger than the sum of its proper divisors (1).

57178879 is an equidigital number, since it uses as much as digits as its factorization.

57178879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 52.

The square root of 57178879 is about 7561.6717067061. The cubic root of 57178879 is about 385.2522752044.

The spelling of 57178879 in words is "fifty-seven million, one hundred seventy-eight thousand, eight hundred seventy-nine".