564160561 has 4 divisors (see below), whose sum is σ = 569637952. Its totient is φ = 558683172.

The previous prime is 564160547. The next prime is 564160573. The reversal of 564160561 is 165061465.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 564160561 - 2⁷ = 564160433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564160361) 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, 2738541 + ... + 2738746.

It is an arithmetic number, because the mean of its divisors is an integer number (142409488).

Almost surely, 2^564160561 is an apocalyptic number.

It is an amenable number.

564160561 is a deficient number, since it is larger than the sum of its proper divisors (5477391).

564160561 is a wasteful number, since it uses less digits than its factorization.

564160561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477390.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 564160561 is about 23752.0643523884. The cubic root of 564160561 is about 826.2933181385.

The spelling of 564160561 in words is "five hundred sixty-four million, one hundred sixty thousand, five hundred sixty-one".