561724875 has 48 divisors (see below), whose sum is σ = 1050163296. Its totient is φ = 299570400.

The previous prime is 561724847. The next prime is 561724903. The reversal of 561724875 is 578427165.

561724875 is a `hidden beast` number, since 5 + 617 + 24 + 8 + 7 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (561724847) and next prime (561724903).

It is not a de Polignac number, because 561724875 - 2⁵ = 561724843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 561724875.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21129 + ... + 39621.

It is an arithmetic number, because the mean of its divisors is an integer number (21878402).

Almost surely, 2^561724875 is an apocalyptic number.

561724875 is a deficient number, since it is larger than the sum of its proper divisors (488438421).

561724875 is an equidigital number, since it uses as much as digits as its factorization.

561724875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18523 (or 18501 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 561724875 is about 23700.7357480733. The cubic root of 561724875 is about 825.1024666118.

The spelling of 561724875 in words is "five hundred sixty-one million, seven hundred twenty-four thousand, eight hundred seventy-five".