561061116 has 72 divisors (see below), whose sum is σ = 1768201344. Its totient is φ = 145729440.

The previous prime is 561061093. The next prime is 561061117. The reversal of 561061116 is 611160165.

561061116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 561061116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561061117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98430 + ... + 103973.

It is an arithmetic number, because the mean of its divisors is an integer number (24558352).

Almost surely, 2^561061116 is an apocalyptic number.

It is an amenable number.

561061116 is an abundant number, since it is smaller than the sum of its proper divisors (1207140228).

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

561061116 is a wasteful number, since it uses less digits than its factorization.

561061116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202431 (or 202426 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 561061116 is about 23686.7286892893. The cubic root of 561061116 is about 824.7773459753. Note that the first 3 decimals are identical.

The spelling of 561061116 in words is "five hundred sixty-one million, sixty-one thousand, one hundred sixteen".