561110166 has 40 divisors (see below), whose sum is σ = 1323483480. Its totient is φ = 177191712.

The previous prime is 561110161. The next prime is 561110167. The reversal of 561110166 is 661011165.

561110166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561110161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 88071 + ... + 94226.

It is an arithmetic number, because the mean of its divisors is an integer number (33087087).

Almost surely, 2^561110166 is an apocalyptic number.

561110166 is an abundant number, since it is smaller than the sum of its proper divisors (762373314).

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

561110166 is a wasteful number, since it uses less digits than its factorization.

561110166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182330 (or 182321 counting only the distinct ones).

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

The square root of 561110166 is about 23687.7640565757. The cubic root of 561110166 is about 824.8013802851.

Subtracting 561110166 from its reverse (661011165), we obtain a palindrome (99900999).

The spelling of 561110166 in words is "five hundred sixty-one million, one hundred ten thousand, one hundred sixty-six".