561107256 has 32 divisors (see below), whose sum is σ = 1406453760. Its totient is φ = 186544352.

The previous prime is 561107243. The next prime is 561107293. The reversal of 561107256 is 652701165.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21330 + ... + 39713.

It is an arithmetic number, because the mean of its divisors is an integer number (43951680).

Almost surely, 2^561107256 is an apocalyptic number.

It is an amenable number.

561107256 is an abundant number, since it is smaller than the sum of its proper divisors (845346504).

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

561107256 is a wasteful number, since it uses less digits than its factorization.

561107256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61435 (or 61431 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 561107256 is about 23687.7026323787. The cubic root of 561107256 is about 824.7999544355.

The spelling of 561107256 in words is "five hundred sixty-one million, one hundred seven thousand, two hundred fifty-six".