564257 has 2 divisors, whose sum is σ = 564258. Its totient is φ = 564256.

The previous prime is 564251. The next prime is 564269. The reversal of 564257 is 752465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 564001 + 256 = 751^2 + 16^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564257 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 564257.

It is not a weakly prime, because it can be changed into another prime (564251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282128 + 282129.

It is an arithmetic number, because the mean of its divisors is an integer number (282129).

2⁵⁶⁴²⁵⁷ is an apocalyptic number.

It is an amenable number.

564257 is a deficient number, since it is larger than the sum of its proper divisors (1).

564257 is an equidigital number, since it uses as much as digits as its factorization.

564257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 564257 is about 751.1704200779. The cubic root of 564257 is about 82.6340398330.

The spelling of 564257 in words is "five hundred sixty-four thousand, two hundred fifty-seven".