506305165 has 4 divisors (see below), whose sum is σ = 607566204. Its totient is φ = 405044128.

The previous prime is 506305159. The next prime is 506305183. The reversal of 506305165 is 561503605.

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 174081636 + 332223529 = 13194^2 + 18227^2 .

It is a cyclic number.

It is not a de Polignac number, because 506305165 - 2³ = 506305157 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 3 ways as a sum of consecutive naturals, for example, 50630512 + ... + 50630521.

It is an arithmetic number, because the mean of its divisors is an integer number (151891551).

Almost surely, 2^506305165 is an apocalyptic number.

It is an amenable number.

506305165 is a deficient number, since it is larger than the sum of its proper divisors (101261039).

506305165 is a wasteful number, since it uses less digits than its factorization.

506305165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101261038.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 506305165 is about 22501.2258554951. The cubic root of 506305165 is about 797.0228747540.

The spelling of 506305165 in words is "five hundred six million, three hundred five thousand, one hundred sixty-five".