561226169 has 16 divisors (see below), whose sum is σ = 664243200. Its totient is φ = 464218560.

The previous prime is 561226129. The next prime is 561226177. The reversal of 561226169 is 961622165.

561226169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 561226169 - 2¹² = 561222073 is a prime.

It is a super-2 number, since 2×561226169² = 629949625540833122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561226109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10232 + ... + 35030.

It is an arithmetic number, because the mean of its divisors is an integer number (41515200).

Almost surely, 2^561226169 is an apocalyptic number.

It is an amenable number.

561226169 is a deficient number, since it is larger than the sum of its proper divisors (103017031).

561226169 is a wasteful number, since it uses less digits than its factorization.

561226169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24920.

The product of its digits is 38880, while the sum is 38.

The square root of 561226169 is about 23690.2125148763. The cubic root of 561226169 is about 824.8582157323.

The spelling of 561226169 in words is "five hundred sixty-one million, two hundred twenty-six thousand, one hundred sixty-nine".