57391040 has 56 divisors (see below), whose sum is σ = 156191712. Its totient is φ = 19676160.

The previous prime is 57390979. The next prime is 57391069. The reversal of 57391040 is 4019375.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 57390994 and 57391012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10571 + ... + 15050.

Almost surely, 2^57391040 is an apocalyptic number.

It is an amenable number.

57391040 is an abundant number, since it is smaller than the sum of its proper divisors (98800672).

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

57391040 is a wasteful number, since it uses less digits than its factorization.

57391040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25645 (or 25635 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 57391040 is about 7575.6874275540. The cubic root of 57391040 is about 385.7281771730.

The spelling of 57391040 in words is "fifty-seven million, three hundred ninety-one thousand, forty".