505885 has 16 divisors (see below), whose sum is σ = 653184. Its totient is φ = 375232.

The previous prime is 505877. The next prime is 505907. The reversal of 505885 is 588505.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 505885 - 2³ = 505877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6054 + ... + 6136.

It is an arithmetic number, because the mean of its divisors is an integer number (40824).

2⁵⁰⁵⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

505885 is a deficient number, since it is larger than the sum of its proper divisors (147299).

505885 is a wasteful number, since it uses less digits than its factorization.

505885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164.

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 505885 is about 711.2559314340. The cubic root of 505885 is about 79.6802339908.

The spelling of 505885 in words is "five hundred five thousand, eight hundred eighty-five".