561113305 has 32 divisors (see below), whose sum is σ = 731566080. Its totient is φ = 411586560.

The previous prime is 561113291. The next prime is 561113317. The reversal of 561113305 is 503311165.

561113305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561113305 - 2²¹ = 559016153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561113305.

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, 636465 + ... + 637345.

It is an arithmetic number, because the mean of its divisors is an integer number (22861440).

Almost surely, 2^561113305 is an apocalyptic number.

It is an amenable number.

561113305 is a deficient number, since it is larger than the sum of its proper divisors (170452775).

561113305 is a wasteful number, since it uses less digits than its factorization.

561113305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 561113305 is about 23687.8303143196. The cubic root of 561113305 is about 824.8029183352.

The spelling of 561113305 in words is "five hundred sixty-one million, one hundred thirteen thousand, three hundred five".