57978794 has 4 divisors (see below), whose sum is σ = 86968194. Its totient is φ = 28989396.

The previous prime is 57978793. The next prime is 57978821. The reversal of 57978794 is 49787975.

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

It can be written as a sum of positive squares in only one way, i.e., 57957769 + 21025 = 7613^2 + 145^2 .

It is not an unprimeable number, because it can be changed into a prime (57978793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14494697 + ... + 14494700.

Almost surely, 2^57978794 is an apocalyptic number.

57978794 is a deficient number, since it is larger than the sum of its proper divisors (28989400).

57978794 is a wasteful number, since it uses less digits than its factorization.

57978794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28989399.

The product of its digits is 4445280, while the sum is 56.

The square root of 57978794 is about 7614.3807364749. The cubic root of 57978794 is about 387.0404825592.

The spelling of 57978794 in words is "fifty-seven million, nine hundred seventy-eight thousand, seven hundred ninety-four".