561611167 has 12 divisors (see below), whose sum is σ = 643911120. Its totient is φ = 487913088.

The previous prime is 561611077. The next prime is 561611189. The reversal of 561611167 is 761116165.

561611167 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561611167 - 2¹¹ = 561609119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561611467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94867 + ... + 100612.

It is an arithmetic number, because the mean of its divisors is an integer number (53659260).

Almost surely, 2^561611167 is an apocalyptic number.

561611167 is a deficient number, since it is larger than the sum of its proper divisors (82299953).

561611167 is a wasteful number, since it uses less digits than its factorization.

561611167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195522 (or 195509 counting only the distinct ones).

The product of its digits is 7560, while the sum is 34.

The square root of 561611167 is about 23698.3367981806. The cubic root of 561611167 is about 825.0467886534.

The spelling of 561611167 in words is "five hundred sixty-one million, six hundred eleven thousand, one hundred sixty-seven".