564434243 has 2 divisors, whose sum is σ = 564434244. Its totient is φ = 564434242.

The previous prime is 564434239. The next prime is 564434251. The reversal of 564434243 is 342434465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 564434243 - 2² = 564434239 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (564434203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282217121 + 282217122.

It is an arithmetic number, because the mean of its divisors is an integer number (282217122).

Almost surely, 2^564434243 is an apocalyptic number.

564434243 is a deficient number, since it is larger than the sum of its proper divisors (1).

564434243 is an equidigital number, since it uses as much as digits as its factorization.

564434243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 35.

The square root of 564434243 is about 23757.8248793950. The cubic root of 564434243 is about 826.4269119326.

The spelling of 564434243 in words is "five hundred sixty-four million, four hundred thirty-four thousand, two hundred forty-three".