565257489 has 16 divisors (see below), whose sum is σ = 772254912. Its totient is φ = 367573248.

The previous prime is 565257487. The next prime is 565257521. The reversal of 565257489 is 984752565.

It is not a de Polignac number, because 565257489 - 2¹ = 565257487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (565257487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107997 + ... + 113109.

It is an arithmetic number, because the mean of its divisors is an integer number (48265932).

Almost surely, 2^565257489 is an apocalyptic number.

It is an amenable number.

565257489 is a deficient number, since it is larger than the sum of its proper divisors (206997423).

565257489 is a wasteful number, since it uses less digits than its factorization.

565257489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016.

The product of its digits is 3024000, while the sum is 51.

The square root of 565257489 is about 23775.1443528741. The cubic root of 565257489 is about 826.8285070718.

The spelling of 565257489 in words is "five hundred sixty-five million, two hundred fifty-seven thousand, four hundred eighty-nine".