505775 has 6 divisors (see below), whose sum is σ = 627192. Its totient is φ = 404600.

The previous prime is 505763. The next prime is 505777. The reversal of 505775 is 577505.

It is not a de Polignac number, because 505775 - 2⁴ = 505759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10091 + ... + 10140.

It is an arithmetic number, because the mean of its divisors is an integer number (104532).

2⁵⁰⁵⁷⁷⁵ is an apocalyptic number.

505775 is a deficient number, since it is larger than the sum of its proper divisors (121417).

505775 is a wasteful number, since it uses less digits than its factorization.

505775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20241 (or 20236 counting only the distinct ones).

The product of its (nonzero) digits is 6125, while the sum is 29.

The square root of 505775 is about 711.1785992281. The cubic root of 505775 is about 79.6744583296.

The spelling of 505775 in words is "five hundred five thousand, seven hundred seventy-five".