505505504 has 24 divisors (see below), whose sum is σ = 1137387888. Its totient is φ = 216645120.

The previous prime is 505505501. The next prime is 505505527. The reversal of 505505504 is 405505505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505505501) 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 in 3 ways as a sum of consecutive naturals, for example, 1128137 + ... + 1128584.

It is an arithmetic number, because the mean of its divisors is an integer number (47391162).

Almost surely, 2^505505504 is an apocalyptic number.

It is an amenable number.

505505504 is an abundant number, since it is smaller than the sum of its proper divisors (631882384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505505504 is a wasteful number, since it uses less digits than its factorization.

505505504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256738 (or 2256730 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 505505504 is about 22483.4495573967. The cubic root of 505505504 is about 796.6030462978.

Subtracting from 505505504 its reverse (405505505), we obtain a palindrome (99999999).

The spelling of 505505504 in words is "five hundred five million, five hundred five thousand, five hundred four".