57977720 has 16 divisors (see below), whose sum is σ = 130449960. Its totient is φ = 23191072.

The previous prime is 57977693. The next prime is 57977723. The reversal of 57977720 is 2777975.

It is a super-2 number, since 2×57977720² = 6722832032796800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57977723) 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, 724682 + ... + 724761.

Almost surely, 2^57977720 is an apocalyptic number.

It is an amenable number.

57977720 is an abundant number, since it is smaller than the sum of its proper divisors (72472240).

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

57977720 is a wasteful number, since it uses less digits than its factorization.

57977720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449454 (or 1449450 counting only the distinct ones).

The product of its (nonzero) digits is 216090, while the sum is 44.

The square root of 57977720 is about 7614.3102117001. The cubic root of 57977720 is about 387.0380926967.

The spelling of 57977720 in words is "fifty-seven million, nine hundred seventy-seven thousand, seven hundred twenty".