565564545 has 128 divisors (see below), whose sum is σ = 1303142400. Its totient is φ = 226001664.

The previous prime is 565564529. The next prime is 565564579. The reversal of 565564545 is 545465565.

565564545 is a `hidden beast` number, since 56 + 5 + 56 + 4 + 545 = 666.

It is not a de Polignac number, because 565564545 - 2⁴ = 565564529 is a prime.

It is a super-2 number, since 2×565564545² = 639726509122114050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 565564545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 232204 + ... + 234626.

It is an arithmetic number, because the mean of its divisors is an integer number (10180800).

Almost surely, 2^565564545 is an apocalyptic number.

It is an amenable number.

565564545 is an abundant number, since it is smaller than the sum of its proper divisors (737577855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

565564545 is a wasteful number, since it uses less digits than its factorization.

565564545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2470 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 45.

The square root of 565564545 is about 23781.6009763851. The cubic root of 565564545 is about 826.9781950175.

The spelling of 565564545 in words is "five hundred sixty-five million, five hundred sixty-four thousand, five hundred forty-five".