561133552 has 80 divisors (see below), whose sum is σ = 1323343872. Its totient is φ = 225008640.

The previous prime is 561133537. The next prime is 561133561. The reversal of 561133552 is 255331165.

561133552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362893 + ... + 364435.

Almost surely, 2^561133552 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 561133552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661671936).

561133552 is an abundant number, since it is smaller than the sum of its proper divisors (762210320).

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

561133552 is a wasteful number, since it uses less digits than its factorization.

561133552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 1760 counting only the distinct ones).

The product of its digits is 13500, while the sum is 31.

The square root of 561133552 is about 23688.2576818136. The cubic root of 561133552 is about 824.8128388413.

The spelling of 561133552 in words is "five hundred sixty-one million, one hundred thirty-three thousand, five hundred fifty-two".