565561165 has 8 divisors (see below), whose sum is σ = 730879128. Its totient is φ = 417645120.

The previous prime is 565561159. The next prime is 565561187. The reversal of 565561165 is 561165565.

It can be written as a sum of positive squares in 4 ways, for example, as 13264164 + 552297001 = 3642^2 + 23501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 565561165 - 2⁷ = 565561037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4350406 + ... + 4350535.

It is an arithmetic number, because the mean of its divisors is an integer number (91359891).

Almost surely, 2^565561165 is an apocalyptic number.

It is an amenable number.

565561165 is a deficient number, since it is larger than the sum of its proper divisors (165317963).

565561165 is a wasteful number, since it uses less digits than its factorization.

565561165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700959.

The product of its digits is 135000, while the sum is 40.

The square root of 565561165 is about 23781.5299129387. The cubic root of 565561165 is about 826.9765475829.

The spelling of 565561165 in words is "five hundred sixty-five million, five hundred sixty-one thousand, one hundred sixty-five".