57915140 has 12 divisors (see below), whose sum is σ = 121621836. Its totient is φ = 23166048.

The previous prime is 57915133. The next prime is 57915157. The reversal of 57915140 is 4151975.

It can be written as a sum of positive squares in 2 ways, for example, as 24760576 + 33154564 = 4976^2 + 5758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57915097 and 57915106.

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, 1447859 + ... + 1447898.

It is an arithmetic number, because the mean of its divisors is an integer number (10135153).

Almost surely, 2^57915140 is an apocalyptic number.

It is an amenable number.

57915140 is an abundant number, since it is smaller than the sum of its proper divisors (63706696).

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

57915140 is a wasteful number, since it uses less digits than its factorization.

57915140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895766 (or 2895764 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 57915140 is about 7610.1997345668. The cubic root of 57915140 is about 386.8987888194.

The spelling of 57915140 in words is "fifty-seven million, nine hundred fifteen thousand, one hundred forty".