505507 has 4 divisors (see below), whose sum is σ = 513856. Its totient is φ = 497160.

The previous prime is 505501. The next prime is 505511. The reversal of 505507 is 705505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 705505 = 5 ⋅141101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505501) 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, 4083 + ... + 4204.

It is an arithmetic number, because the mean of its divisors is an integer number (128464).

2⁵⁰⁵⁵⁰⁷ is an apocalyptic number.

505507 is a deficient number, since it is larger than the sum of its proper divisors (8349).

505507 is an equidigital number, since it uses as much as digits as its factorization.

505507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8348.

The product of its (nonzero) digits is 875, while the sum is 22.

The square root of 505507 is about 710.9901546435. The cubic root of 505507 is about 79.6603832123.

The spelling of 505507 in words is "five hundred five thousand, five hundred seven".