57157660 has 48 divisors (see below), whose sum is σ = 138430656. Its totient is φ = 19418112.

The previous prime is 57157657. The next prime is 57157663. The reversal of 57157660 is 6675175.

It is an interprime number because it is at equal distance from previous prime (57157657) and next prime (57157663).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57157663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14014 + ... + 17626.

It is an arithmetic number, because the mean of its divisors is an integer number (2883972).

Almost surely, 2^57157660 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 57157660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69215328).

57157660 is an abundant number, since it is smaller than the sum of its proper divisors (81272996).

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

57157660 is a wasteful number, since it uses less digits than its factorization.

57157660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742 (or 3740 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 57157660 is about 7560.2685137500. The cubic root of 57157660 is about 385.2046137860.

The spelling of 57157660 in words is "fifty-seven million, one hundred fifty-seven thousand, six hundred sixty".