564161 has 4 divisors (see below), whose sum is σ = 607572. Its totient is φ = 520752.

The previous prime is 564149. The next prime is 564163. The reversal of 564161 is 161465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 309136 + 255025 = 556^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 564161 - 2⁶ = 564097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564163) 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, 21686 + ... + 21711.

It is an arithmetic number, because the mean of its divisors is an integer number (151893).

2⁵⁶⁴¹⁶¹ is an apocalyptic number.

It is an amenable number.

564161 is a deficient number, since it is larger than the sum of its proper divisors (43411).

564161 is a wasteful number, since it uses less digits than its factorization.

564161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43410.

The product of its digits is 720, while the sum is 23.

The square root of 564161 is about 751.1065170800. The cubic root of 564161 is about 82.6293532464.

The spelling of 564161 in words is "five hundred sixty-four thousand, one hundred sixty-one".