561981224 has 32 divisors (see below), whose sum is σ = 1205107200. Its totient is φ = 240676800.

The previous prime is 561981181. The next prime is 561981239. The reversal of 561981224 is 422189165.

561981224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×561981224² = 631645792257076352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103817 + ... + 109095.

It is an arithmetic number, because the mean of its divisors is an integer number (37659600).

Almost surely, 2^561981224 is an apocalyptic number.

It is an amenable number.

561981224 is an abundant number, since it is smaller than the sum of its proper divisors (643125976).

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

561981224 is a wasteful number, since it uses less digits than its factorization.

561981224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7193 (or 7189 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 561981224 is about 23706.1431700730. The cubic root of 561981224 is about 825.2279622261.

The spelling of 561981224 in words is "five hundred sixty-one million, nine hundred eighty-one thousand, two hundred twenty-four".