564585161 has 4 divisors (see below), whose sum is σ = 645240192. Its totient is φ = 483930132.

The previous prime is 564585107. The next prime is 564585191. The reversal of 564585161 is 161585465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 564585161 - 2¹⁴ = 564568777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564585191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40327505 + ... + 40327518.

It is an arithmetic number, because the mean of its divisors is an integer number (161310048).

Almost surely, 2^564585161 is an apocalyptic number.

It is an amenable number.

564585161 is a deficient number, since it is larger than the sum of its proper divisors (80655031).

564585161 is an equidigital number, since it uses as much as digits as its factorization.

564585161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80655030.

The product of its digits is 144000, while the sum is 41.

The square root of 564585161 is about 23761.0008417154. Note that the first 3 decimals coincide. The cubic root of 564585161 is about 826.5005618360.

The spelling of 564585161 in words is "five hundred sixty-four million, five hundred eighty-five thousand, one hundred sixty-one".