565945505 has 4 divisors (see below), whose sum is σ = 679134612. Its totient is φ = 452756400.

The previous prime is 565945483. The next prime is 565945511. The reversal of 565945505 is 505549565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165585424 + 400360081 = 12868^2 + 20009^2 .

It is not a de Polignac number, because 565945505 - 2⁶ = 565945441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56594546 + ... + 56594555.

It is an arithmetic number, because the mean of its divisors is an integer number (169783653).

Almost surely, 2^565945505 is an apocalyptic number.

It is an amenable number.

565945505 is a deficient number, since it is larger than the sum of its proper divisors (113189107).

565945505 is a wasteful number, since it uses less digits than its factorization.

565945505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113189106.

The product of its (nonzero) digits is 675000, while the sum is 44.

The square root of 565945505 is about 23789.6091813212. The cubic root of 565945505 is about 827.1638354276.

The spelling of 565945505 in words is "five hundred sixty-five million, nine hundred forty-five thousand, five hundred five".