505523 has 2 divisors, whose sum is σ = 505524. Its totient is φ = 505522.

The previous prime is 505513. The next prime is 505537. The reversal of 505523 is 325505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505523 - 2⁶ = 505459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505495 and 505504.

It is not a weakly prime, because it can be changed into another prime (505513) by changing a digit.

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 as a sum of consecutive naturals, namely, 252761 + 252762.

It is an arithmetic number, because the mean of its divisors is an integer number (252762).

2⁵⁰⁵⁵²³ is an apocalyptic number.

505523 is a deficient number, since it is larger than the sum of its proper divisors (1).

505523 is an equidigital number, since it uses as much as digits as its factorization.

505523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 505523 is about 711.0014064684. The cubic root of 505523 is about 79.6612236574.

The spelling of 505523 in words is "five hundred five thousand, five hundred twenty-three".