56487570 has 64 divisors (see below), whose sum is σ = 144132480. Its totient is φ = 14128128.

The previous prime is 56487533. The next prime is 56487581. The reversal of 56487570 is 7578465.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63972 + ... + 64848.

It is an arithmetic number, because the mean of its divisors is an integer number (2252070).

Almost surely, 2^56487570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56487570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72066240).

56487570 is an abundant number, since it is smaller than the sum of its proper divisors (87644910).

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

56487570 is a wasteful number, since it uses less digits than its factorization.

56487570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 56487570 is about 7515.8213124049. The cubic root of 56487570 is about 383.6933722990.

The spelling of 56487570 in words is "fifty-six million, four hundred eighty-seven thousand, five hundred seventy".