57581480 has 48 divisors (see below), whose sum is σ = 142419060. Its totient is φ = 20936960.

The previous prime is 57581473. The next prime is 57581519. The reversal of 57581480 is 8418575.

It can be written as a sum of positive squares in 2 ways, for example, as 53027524 + 4553956 = 7282^2 + 2134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1109 + ... + 10788.

Almost surely, 2^57581480 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 57581480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71209530).

57581480 is an abundant number, since it is smaller than the sum of its proper divisors (84837580).

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

57581480 is a wasteful number, since it uses less digits than its factorization.

57581480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11930 (or 11915 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 57581480 is about 7588.2461741828. The cubic root of 57581480 is about 386.1543585178.

The spelling of 57581480 in words is "fifty-seven million, five hundred eighty-one thousand, four hundred eighty".