57728579 has 2 divisors, whose sum is σ = 57728580. Its totient is φ = 57728578.

The previous prime is 57728537. The next prime is 57728581. The reversal of 57728579 is 97582775.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57728579 - 2²⁰ = 56680003 is a prime.

Together with 57728581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57728179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28864289 + 28864290.

It is an arithmetic number, because the mean of its divisors is an integer number (28864290).

Almost surely, 2^57728579 is an apocalyptic number.

57728579 is a deficient number, since it is larger than the sum of its proper divisors (1).

57728579 is an equidigital number, since it uses as much as digits as its factorization.

57728579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1234800, while the sum is 50.

The square root of 57728579 is about 7597.9325477395. The cubic root of 57728579 is about 386.4829052340.

The spelling of 57728579 in words is "fifty-seven million, seven hundred twenty-eight thousand, five hundred seventy-nine".