565263361 has 4 divisors (see below), whose sum is σ = 608745172. Its totient is φ = 521781552.

The previous prime is 565263343. The next prime is 565263401. The reversal of 565263361 is 163362565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163362565 = 5 ⋅32672513.

It can be written as a sum of positive squares in 2 ways, for example, as 388878400 + 176384961 = 19720^2 + 13281^2 .

It is a cyclic number.

It is not a de Polignac number, because 565263361 - 2¹⁵ = 565230593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 565263361.

It is not an unprimeable number, because it can be changed into a prime (565263961) 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 3 ways as a sum of consecutive naturals, for example, 21740886 + ... + 21740911.

It is an arithmetic number, because the mean of its divisors is an integer number (152186293).

Almost surely, 2^565263361 is an apocalyptic number.

It is an amenable number.

565263361 is a deficient number, since it is larger than the sum of its proper divisors (43481811).

565263361 is a wasteful number, since it uses less digits than its factorization.

565263361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43481810.

The product of its digits is 97200, while the sum is 37.

The square root of 565263361 is about 23775.2678428656. The cubic root of 565263361 is about 826.8313701447.

The spelling of 565263361 in words is "five hundred sixty-five million, two hundred sixty-three thousand, three hundred sixty-one".