505065 has 16 divisors (see below), whose sum is σ = 881856. Its totient is φ = 244800.

The previous prime is 505061. The next prime is 505067. The reversal of 505065 is 560505.

It is not a de Polignac number, because 505065 - 2² = 505061 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505065.

It is not an unprimeable number, because it can be changed into a prime (505061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1366 + ... + 1695.

It is an arithmetic number, because the mean of its divisors is an integer number (55116).

2⁵⁰⁵⁰⁶⁵ is an apocalyptic number.

505065 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505065 is a deficient number, since it is larger than the sum of its proper divisors (376791).

505065 is a wasteful number, since it uses less digits than its factorization.

505065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 505065 is about 710.6792525465. The cubic root of 505065 is about 79.6371589005.

It can be divided in two parts, 5050 and 65, that added together give a palindrome (5115).

The spelling of 505065 in words is "five hundred five thousand, sixty-five".