565005109 has 4 divisors (see below), whose sum is σ = 594742240. Its totient is φ = 535267980.

The previous prime is 565005073. The next prime is 565005113. The reversal of 565005109 is 901500565.

It is a happy number.

565005109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-565005109 is a prime.

It is a super-2 number, since 2×565005109² = 638461546392203762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565005139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14868537 + ... + 14868574.

It is an arithmetic number, because the mean of its divisors is an integer number (148685560).

Almost surely, 2^565005109 is an apocalyptic number.

It is an amenable number.

565005109 is a deficient number, since it is larger than the sum of its proper divisors (29737131).

565005109 is a wasteful number, since it uses less digits than its factorization.

565005109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29737130.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 565005109 is about 23769.8361163892. The cubic root of 565005109 is about 826.7054327518.

The spelling of 565005109 in words is "five hundred sixty-five million, five thousand, one hundred nine".