561994259 has 12 divisors (see below), whose sum is σ = 588945000. Its totient is φ = 536230464.

The previous prime is 561994253. The next prime is 561994267. The reversal of 561994259 is 952499165.

It is not a de Polignac number, because 561994259 - 2⁴ = 561994243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561994253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262907 + ... + 265035.

It is an arithmetic number, because the mean of its divisors is an integer number (49078750).

Almost surely, 2^561994259 is an apocalyptic number.

561994259 is a deficient number, since it is larger than the sum of its proper divisors (26950741).

561994259 is a wasteful number, since it uses less digits than its factorization.

561994259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674 (or 2651 counting only the distinct ones).

The product of its digits is 874800, while the sum is 50.

The square root of 561994259 is about 23706.4180972158. The cubic root of 561994259 is about 825.2343424887.

The spelling of 561994259 in words is "five hundred sixty-one million, nine hundred ninety-four thousand, two hundred fifty-nine".