561994224 has 40 divisors (see below), whose sum is σ = 1583803392. Its totient is φ = 170301120.

The previous prime is 561994207. The next prime is 561994231. The reversal of 561994224 is 422499165.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 531664 + ... + 532719.

Almost surely, 2^561994224 is an apocalyptic number.

It is an amenable number.

561994224 is an abundant number, since it is smaller than the sum of its proper divisors (1021809168).

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

561994224 is a wasteful number, since it uses less digits than its factorization.

561994224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064405 (or 1064399 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 561994224 is about 23706.4173590191. The cubic root of 561994224 is about 825.2343253573.

The spelling of 561994224 in words is "five hundred sixty-one million, nine hundred ninety-four thousand, two hundred twenty-four".