505585 has 4 divisors (see below), whose sum is σ = 606708. Its totient is φ = 404464.

The previous prime is 505573. The next prime is 505601. The reversal of 505585 is 585505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 585505 = 5 ⋅117101.

It can be written as a sum of positive squares in 2 ways, for example, as 187489 + 318096 = 433^2 + 564^2 .

It is a cyclic number.

It is not a de Polignac number, because 505585 - 2⁹ = 505073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50554 + ... + 50563.

It is an arithmetic number, because the mean of its divisors is an integer number (151677).

2⁵⁰⁵⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

505585 is a deficient number, since it is larger than the sum of its proper divisors (101123).

505585 is a wasteful number, since it uses less digits than its factorization.

505585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101122.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 505585 is about 711.0450056079. The cubic root of 505585 is about 79.6644802148.

The spelling of 505585 in words is "five hundred five thousand, five hundred eighty-five".