564557 has 4 divisors (see below), whose sum is σ = 645216. Its totient is φ = 483900.

The previous prime is 564533. The next prime is 564593. The reversal of 564557 is 755465.

It is a happy number.

564557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 564557 - 2⁸ = 564301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564257) 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, 40319 + ... + 40332.

It is an arithmetic number, because the mean of its divisors is an integer number (161304).

2⁵⁶⁴⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

564557 is a deficient number, since it is larger than the sum of its proper divisors (80659).

564557 is an equidigital number, since it uses as much as digits as its factorization.

564557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80658.

The product of its digits is 21000, while the sum is 32.

The square root of 564557 is about 751.3700819170. The cubic root of 564557 is about 82.6486819906.

The spelling of 564557 in words is "five hundred sixty-four thousand, five hundred fifty-seven".