564416221 has 2 divisors, whose sum is σ = 564416222. Its totient is φ = 564416220.

The previous prime is 564416219. The next prime is 564416231. The reversal of 564416221 is 122614465.

It is a happy number.

564416221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528356196 + 36060025 = 22986^2 + 6005^2 .

It is a cyclic number.

It is not a de Polignac number, because 564416221 - 2¹ = 564416219 is a prime.

Together with 564416219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564416231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282208110 + 282208111.

It is an arithmetic number, because the mean of its divisors is an integer number (282208111).

Almost surely, 2^564416221 is an apocalyptic number.

It is an amenable number.

564416221 is a deficient number, since it is larger than the sum of its proper divisors (1).

564416221 is an equidigital number, since it uses as much as digits as its factorization.

564416221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 564416221 is about 23757.4455908037. The cubic root of 564416221 is about 826.4181160900.

The spelling of 564416221 in words is "five hundred sixty-four million, four hundred sixteen thousand, two hundred twenty-one".