57978750 has 40 divisors (see below), whose sum is σ = 144909864. Its totient is φ = 15460000.

The previous prime is 57978733. The next prime is 57978779. The reversal of 57978750 is 5787975.

It is a self number, because there is not a number n which added to its sum of digits gives 57978750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3981 + ... + 11480.

Almost surely, 2^57978750 is an apocalyptic number.

57978750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57978750 is an abundant number, since it is smaller than the sum of its proper divisors (86931114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57978750 is a wasteful number, since it uses less digits than its factorization.

57978750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15486 (or 15471 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 48.

The square root of 57978750 is about 7614.3778472046. The cubic root of 57978750 is about 387.0403846511.

The spelling of 57978750 in words is "fifty-seven million, nine hundred seventy-eight thousand, seven hundred fifty".