561530076 has 24 divisors (see below), whose sum is σ = 1312237584. Its totient is φ = 186890880.

The previous prime is 561530051. The next prime is 561530087. The reversal of 561530076 is 670035165.

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, 27465 + ... + 43328.

It is an arithmetic number, because the mean of its divisors is an integer number (54676566).

Almost surely, 2^561530076 is an apocalyptic number.

It is an amenable number.

561530076 is an abundant number, since it is smaller than the sum of its proper divisors (750707508).

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

561530076 is a wasteful number, since it uses less digits than its factorization.

561530076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71461 (or 71459 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 561530076 is about 23696.6258357598. The cubic root of 561530076 is about 825.0070772579.

The spelling of 561530076 in words is "five hundred sixty-one million, five hundred thirty thousand, seventy-six".