561307164 has 24 divisors (see below), whose sum is σ = 1428782208. Its totient is φ = 170093040.

The previous prime is 561307141. The next prime is 561307181. The reversal of 561307164 is 461703165.

561307164 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 (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126032 + ... + 2126295.

It is an arithmetic number, because the mean of its divisors is an integer number (59532592).

Almost surely, 2^561307164 is an apocalyptic number.

It is an amenable number.

561307164 is an abundant number, since it is smaller than the sum of its proper divisors (867475044).

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

561307164 is a wasteful number, since it uses less digits than its factorization.

561307164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252345 (or 4252343 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 561307164 is about 23691.9219144416. The cubic root of 561307164 is about 824.8978944342.

The spelling of 561307164 in words is "five hundred sixty-one million, three hundred seven thousand, one hundred sixty-four".