505873 has 4 divisors (see below), whose sum is σ = 514228. Its totient is φ = 497520.

The previous prime is 505871. The next prime is 505877. The reversal of 505873 is 378505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54289 + 451584 = 233^2 + 672^2 .

It is a cyclic number.

It is not a de Polignac number, because 505873 - 2¹ = 505871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4086 + ... + 4207.

It is an arithmetic number, because the mean of its divisors is an integer number (128557).

2⁵⁰⁵⁸⁷³ is an apocalyptic number.

It is an amenable number.

505873 is a deficient number, since it is larger than the sum of its proper divisors (8355).

505873 is an equidigital number, since it uses as much as digits as its factorization.

505873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8354.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 505873 is about 711.2474956019. The cubic root of 505873 is about 79.6796039594.

It can be divided in two parts, 505 and 873, that added together give a triangular number (1378 = T₅₂).

The spelling of 505873 in words is "five hundred five thousand, eight hundred seventy-three".