561585288 has 64 divisors (see below), whose sum is σ = 1538507520. Its totient is φ = 169409600.

The previous prime is 561585263. The next prime is 561585313. The reversal of 561585288 is 882585165.

It is an interprime number because it is at equal distance from previous prime (561585263) and next prime (561585313).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55243 + ... + 64613.

It is an arithmetic number, because the mean of its divisors is an integer number (24039180).

Almost surely, 2^561585288 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 561585288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769253760).

561585288 is an abundant number, since it is smaller than the sum of its proper divisors (976922232).

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

561585288 is a wasteful number, since it uses less digits than its factorization.

561585288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9618 (or 9614 counting only the distinct ones).

The product of its digits is 768000, while the sum is 48.

The square root of 561585288 is about 23697.7907831089. The cubic root of 561585288 is about 825.0341157609.

The spelling of 561585288 in words is "five hundred sixty-one million, five hundred eighty-five thousand, two hundred eighty-eight".