57156260 has 48 divisors (see below), whose sum is σ = 139781376. Its totient is φ = 19224192.

The previous prime is 57156257. The next prime is 57156269. The reversal of 57156260 is 6265175.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (57156269) 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, 3569 + ... + 11271.

It is an arithmetic number, because the mean of its divisors is an integer number (2912112).

Almost surely, 2^57156260 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 57156260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69890688).

57156260 is an abundant number, since it is smaller than the sum of its proper divisors (82625116).

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

57156260 is a wasteful number, since it uses less digits than its factorization.

57156260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772 (or 7770 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 57156260 is about 7560.1759238790. The cubic root of 57156260 is about 385.2014687373.

The spelling of 57156260 in words is "fifty-seven million, one hundred fifty-six thousand, two hundred sixty".