57066560 has 28 divisors (see below), whose sum is σ = 135890508. Its totient is φ = 22826496.

The previous prime is 57066539. The next prime is 57066587. The reversal of 57066560 is 6566075.

It can be written as a sum of positive squares in 2 ways, for example, as 19219456 + 37847104 = 4384^2 + 6152^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57066560.

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, 88847 + ... + 89486.

Almost surely, 2^57066560 is an apocalyptic number.

It is an amenable number.

57066560 is an abundant number, since it is smaller than the sum of its proper divisors (78823948).

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

57066560 is a wasteful number, since it uses less digits than its factorization.

57066560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178350 (or 178340 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 57066560 is about 7554.2411928664. The cubic root of 57066560 is about 384.9998538258. Note that the first 3 decimals are identical.

The spelling of 57066560 in words is "fifty-seven million, sixty-six thousand, five hundred sixty".