565134989 has 2 divisors, whose sum is σ = 565134990. Its totient is φ = 565134988.

The previous prime is 565134979. The next prime is 565135009. The reversal of 565134989 is 989431565.

It is a happy number.

565134989 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., 421973764 + 143161225 = 20542^2 + 11965^2 .

It is a cyclic number.

It is not a de Polignac number, because 565134989 - 2⁸ = 565134733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565134949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282567494 + 282567495.

It is an arithmetic number, because the mean of its divisors is an integer number (282567495).

Almost surely, 2^565134989 is an apocalyptic number.

It is an amenable number.

565134989 is a deficient number, since it is larger than the sum of its proper divisors (1).

565134989 is an equidigital number, since it uses as much as digits as its factorization.

565134989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 565134989 is about 23772.5679933826. The cubic root of 565134989 is about 826.7687739344.

The spelling of 565134989 in words is "five hundred sixty-five million, one hundred thirty-four thousand, nine hundred eighty-nine".