561883385 has 16 divisors (see below), whose sum is σ = 773338752. Its totient is φ = 383913600.

The previous prime is 561883379. The next prime is 561883397. The reversal of 561883385 is 583388165.

It is not a de Polignac number, because 561883385 - 2⁸ = 561883129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18731 + ... + 38400.

It is an arithmetic number, because the mean of its divisors is an integer number (48333672).

Almost surely, 2^561883385 is an apocalyptic number.

It is an amenable number.

561883385 is a deficient number, since it is larger than the sum of its proper divisors (211455367).

561883385 is a wasteful number, since it uses less digits than its factorization.

561883385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57424.

The product of its digits is 691200, while the sum is 47.

The square root of 561883385 is about 23704.0795012167. The cubic root of 561883385 is about 825.1800696625.

The spelling of 561883385 in words is "five hundred sixty-one million, eight hundred eighty-three thousand, three hundred eighty-five".