505165 has 8 divisors (see below), whose sum is σ = 615168. Its totient is φ = 398160.

The previous prime is 505159. The next prime is 505181. The reversal of 505165 is 561505.

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

It is not a de Polignac number, because 505165 - 2³ = 505157 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, 357 + ... + 1066.

It is an arithmetic number, because the mean of its divisors is an integer number (76896).

2⁵⁰⁵¹⁶⁵ is an apocalyptic number.

It is an amenable number.

505165 is a deficient number, since it is larger than the sum of its proper divisors (110003).

505165 is a wasteful number, since it uses less digits than its factorization.

505165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 505165 is about 710.7496042911. The cubic root of 505165 is about 79.6424144553.

The spelling of 505165 in words is "five hundred five thousand, one hundred sixty-five".