57397760 has 80 divisors (see below), whose sum is σ = 157329216. Its totient is φ = 19673088.

The previous prime is 57397759. The next prime is 57397799. The reversal of 57397760 is 6779375.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16319 + ... + 19521.

Almost surely, 2^57397760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57397760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78664608).

57397760 is an abundant number, since it is smaller than the sum of its proper divisors (99931456).

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

57397760 is an equidigital number, since it uses as much as digits as its factorization.

57397760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233 (or 3217 counting only the distinct ones).

The product of its (nonzero) digits is 277830, while the sum is 44.

The square root of 57397760 is about 7576.1309386784. The cubic root of 57397760 is about 385.7432317424.

The spelling of 57397760 in words is "fifty-seven million, three hundred ninety-seven thousand, seven hundred sixty".