57897780 has 48 divisors (see below), whose sum is σ = 165891264. Its totient is φ = 15079680.

The previous prime is 57897773. The next prime is 57897799. The reversal of 57897780 is 8779875.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8641 + ... + 13800.

It is an arithmetic number, because the mean of its divisors is an integer number (3456068).

Almost surely, 2^57897780 is an apocalyptic number.

It is an amenable number.

57897780 is an abundant number, since it is smaller than the sum of its proper divisors (107993484).

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

57897780 is a wasteful number, since it uses less digits than its factorization.

57897780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22496 (or 22494 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 51.

The square root of 57897780 is about 7609.0590745505. The cubic root of 57897780 is about 386.8601274597.

The spelling of 57897780 in words is "fifty-seven million, eight hundred ninety-seven thousand, seven hundred eighty".