57921140 has 12 divisors (see below), whose sum is σ = 121634436. Its totient is φ = 23168448.

The previous prime is 57921137. The next prime is 57921167. The reversal of 57921140 is 4112975.

It can be written as a sum of positive squares in 2 ways, for example, as 16679056 + 41242084 = 4084^2 + 6422^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1448009 + ... + 1448048.

It is an arithmetic number, because the mean of its divisors is an integer number (10136203).

Almost surely, 2^57921140 is an apocalyptic number.

It is an amenable number.

57921140 is an abundant number, since it is smaller than the sum of its proper divisors (63713296).

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

57921140 is a wasteful number, since it uses less digits than its factorization.

57921140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896066 (or 2896064 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 57921140 is about 7610.5939321448. The cubic root of 57921140 is about 386.9121492440.

The spelling of 57921140 in words is "fifty-seven million, nine hundred twenty-one thousand, one hundred forty".