57001980 has 48 divisors (see below), whose sum is σ = 182407680. Its totient is φ = 13028928.

The previous prime is 57001949. The next prime is 57002039. The reversal of 57001980 is 8910075.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67440 + ... + 68279.

It is an arithmetic number, because the mean of its divisors is an integer number (3800160).

Almost surely, 2^57001980 is an apocalyptic number.

It is an amenable number.

57001980 is an abundant number, since it is smaller than the sum of its proper divisors (125405700).

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

57001980 is a wasteful number, since it uses less digits than its factorization.

57001980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135738 (or 135736 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 57001980 is about 7549.9655628354. The cubic root of 57001980 is about 384.8545692353.

The spelling of 57001980 in words is "fifty-seven million, one thousand, nine hundred eighty".