57788879 has 4 divisors (see below), whose sum is σ = 58143576. Its totient is φ = 57434184.

The previous prime is 57788869. The next prime is 57788923. The reversal of 57788879 is 97888775.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57788879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57788849) 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, 177104 + ... + 177429.

It is an arithmetic number, because the mean of its divisors is an integer number (14535894).

Almost surely, 2^57788879 is an apocalyptic number.

57788879 is a deficient number, since it is larger than the sum of its proper divisors (354697).

57788879 is a wasteful number, since it uses less digits than its factorization.

57788879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354696.

The product of its digits is 7902720, while the sum is 59.

The square root of 57788879 is about 7601.8996967863. The cubic root of 57788879 is about 386.6174244499.

The spelling of 57788879 in words is "fifty-seven million, seven hundred eighty-eight thousand, eight hundred seventy-nine".