505485 has 24 divisors (see below), whose sum is σ = 898560. Its totient is φ = 262752.

The previous prime is 505481. The next prime is 505493. The reversal of 505485 is 584505.

It is not a de Polignac number, because 505485 - 2² = 505481 is a prime.

505485 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1996 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (37440).

2⁵⁰⁵⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

505485 is a deficient number, since it is larger than the sum of its proper divisors (393075).

505485 is a wasteful number, since it uses less digits than its factorization.

505485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 505485 is about 710.9746830936. The cubic root of 505485 is about 79.6592275713.

It can be divided in two parts, 505 and 485, that added together give a triangular number (990 = T₄₄).

The spelling of 505485 in words is "five hundred five thousand, four hundred eighty-five".