564643481 has 2 divisors, whose sum is σ = 564643482. Its totient is φ = 564643480.

The previous prime is 564643459. The next prime is 564643489. The reversal of 564643481 is 184346465.

It is a happy number.

564643481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 551827081 + 12816400 = 23491^2 + 3580^2 .

It is a cyclic number.

It is not a de Polignac number, because 564643481 - 2¹⁰ = 564642457 is a prime.

It is a super-2 number, since 2×564643481² = 637644521271594722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (564643489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282321740 + 282321741.

It is an arithmetic number, because the mean of its divisors is an integer number (282321741).

Almost surely, 2^564643481 is an apocalyptic number.

It is an amenable number.

564643481 is a deficient number, since it is larger than the sum of its proper divisors (1).

564643481 is an equidigital number, since it uses as much as digits as its factorization.

564643481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 41.

The square root of 564643481 is about 23762.2280310580. The cubic root of 564643481 is about 826.5290192217.

The spelling of 564643481 in words is "five hundred sixty-four million, six hundred forty-three thousand, four hundred eighty-one".