505255 has 4 divisors (see below), whose sum is σ = 606312. Its totient is φ = 404200.

The previous prime is 505237. The next prime is 505277. The reversal of 505255 is 552505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552505 = 5 ⋅110501.

It is not a de Polignac number, because 505255 - 2¹¹ = 503207 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50521 + ... + 50530.

It is an arithmetic number, because the mean of its divisors is an integer number (151578).

2⁵⁰⁵²⁵⁵ is an apocalyptic number.

505255 is a deficient number, since it is larger than the sum of its proper divisors (101057).

505255 is a wasteful number, since it uses less digits than its factorization.

505255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101056.

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 505255 is about 710.8129149080. The cubic root of 505255 is about 79.6471438617.

The spelling of 505255 in words is "five hundred five thousand, two hundred fifty-five".