505508 has 12 divisors (see below), whose sum is σ = 905520. Its totient is φ = 246792.

The previous prime is 505501. The next prime is 505511. The reversal of 505508 is 805505.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505508.

It is not an unprimeable number, because it can be changed into a prime (505501) by changing a digit.

505508 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 1298 + ... + 1641.

It is an arithmetic number, because the mean of its divisors is an integer number (75460).

2⁵⁰⁵⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

505508 is a deficient number, since it is larger than the sum of its proper divisors (400012).

505508 is a wasteful number, since it uses less digits than its factorization.

505508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 505508 is about 710.9908578878. The cubic root of 505508 is about 79.6604357406.

The spelling of 505508 in words is "five hundred five thousand, five hundred eight".