505895 has 16 divisors (see below), whose sum is σ = 672672. Its totient is φ = 362880.

The previous prime is 505877. The next prime is 505907. The reversal of 505895 is 598505.

It is not a de Polignac number, because 505895 - 2⁸ = 505639 is a prime.

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, 2705 + ... + 2885.

It is an arithmetic number, because the mean of its divisors is an integer number (42042).

2⁵⁰⁵⁸⁹⁵ is an apocalyptic number.

505895 is a deficient number, since it is larger than the sum of its proper divisors (166777).

505895 is a wasteful number, since it uses less digits than its factorization.

505895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 505895 is about 711.2629612176. The cubic root of 505895 is about 79.6807590094.

The spelling of 505895 in words is "five hundred five thousand, eight hundred ninety-five".