564445081 has 2 divisors, whose sum is σ = 564445082. Its totient is φ = 564445080.

The previous prime is 564445019. The next prime is 564445087. The reversal of 564445081 is 180544465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 563635081 + 810000 = 23741^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 564445081 - 2¹⁹ = 563920793 is a prime.

It is a super-2 number, since 2×564445081² = 637196498930193122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 564445081.

It is not a weakly prime, because it can be changed into another prime (564445087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282222540 + 282222541.

It is an arithmetic number, because the mean of its divisors is an integer number (282222541).

Almost surely, 2^564445081 is an apocalyptic number.

It is an amenable number.

564445081 is a deficient number, since it is larger than the sum of its proper divisors (1).

564445081 is an equidigital number, since it uses as much as digits as its factorization.

564445081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 564445081 is about 23758.0529715716. The cubic root of 564445081 is about 826.4322014520.

The spelling of 564445081 in words is "five hundred sixty-four million, four hundred forty-five thousand, eighty-one".