561559296 has 144 divisors (see below), whose sum is σ = 1564559360. Its totient is φ = 178606080.

The previous prime is 561559267. The next prime is 561559309. The reversal of 561559296 is 692955165.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 2452110 + ... + 2452338.

Almost surely, 2^561559296 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 561559296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (782279680).

561559296 is an abundant number, since it is smaller than the sum of its proper divisors (1003000064).

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

561559296 is a wasteful number, since it uses less digits than its factorization.

561559296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 368 counting only the distinct ones).

The product of its digits is 729000, while the sum is 48.

The square root of 561559296 is about 23697.2423712127. The cubic root of 561559296 is about 825.0213871407.

The spelling of 561559296 in words is "five hundred sixty-one million, five hundred fifty-nine thousand, two hundred ninety-six".