561247044 has 96 divisors (see below), whose sum is σ = 1418933376. Its totient is φ = 172032000.

The previous prime is 561247039. The next prime is 561247109. The reversal of 561247044 is 440742165.

561247044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 561246996 and 561247014.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2235919 + ... + 2236169.

It is an arithmetic number, because the mean of its divisors is an integer number (14780556).

Almost surely, 2^561247044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561247044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709466688).

561247044 is an abundant number, since it is smaller than the sum of its proper divisors (857686332).

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

561247044 is a wasteful number, since it uses less digits than its factorization.

561247044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 561247044 is about 23690.6530935726. The cubic root of 561247044 is about 824.8684425670.

The spelling of 561247044 in words is "five hundred sixty-one million, two hundred forty-seven thousand, forty-four".