501165 has 48 divisors (see below), whose sum is σ = 1043328. Its totient is φ = 217728.

The previous prime is 501157. The next prime is 501173. The reversal of 501165 is 561105.

501165 is a `hidden beast` number, since 501 + 165 = 666.

501165 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (501157) and next prime (501173).

It is not a de Polignac number, because 501165 - 2³ = 501157 is a prime.

501165 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11634 + ... + 11676.

It is an arithmetic number, because the mean of its divisors is an integer number (21736).

2⁵⁰¹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

501165 is an abundant number, since it is smaller than the sum of its proper divisors (542163).

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

501165 is a wasteful number, since it uses less digits than its factorization.

501165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 501165 is about 707.9300812933. The cubic root of 501165 is about 79.4316488576.

It can be divided in two parts, 501 and 165, that added together give a palindrome (666).

The spelling of 501165 in words is "five hundred one thousand, one hundred sixty-five".