561075860 has 24 divisors (see below), whose sum is σ = 1179630816. Its totient is φ = 224169120.

The previous prime is 561075817. The next prime is 561075887. The reversal of 561075860 is 68570165.

It is a happy number.

It is a super-2 number, since 2×561075860² = 629612241349479200, which contains 22 as substring.

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, 1775 + ... + 33545.

It is an arithmetic number, because the mean of its divisors is an integer number (49151284).

Almost surely, 2^561075860 is an apocalyptic number.

It is an amenable number.

561075860 is an abundant number, since it is smaller than the sum of its proper divisors (618554956).

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

561075860 is a wasteful number, since it uses less digits than its factorization.

561075860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32663 (or 32661 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 561075860 is about 23687.0399163762. The cubic root of 561075860 is about 824.7845706254.

The spelling of 561075860 in words is "five hundred sixty-one million, seventy-five thousand, eight hundred sixty".