505505506 has 48 divisors (see below), whose sum is σ = 899632800. Its totient is φ = 211229760.

The previous prime is 505505501. The next prime is 505505527. The reversal of 505505506 is 605505505.

It is not an unprimeable number, because it can be changed into a prime (505505501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11755921 + ... + 11755963.

It is an arithmetic number, because the mean of its divisors is an integer number (18742350).

Almost surely, 2^505505506 is an apocalyptic number.

505505506 is a deficient number, since it is larger than the sum of its proper divisors (394127294).

505505506 is an equidigital number, since it uses as much as digits as its factorization.

505505506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 505505506 is about 22483.4496018738. The cubic root of 505505506 is about 796.6030473484.

Subtracting 505505506 from its reverse (605505505), we obtain a palindrome (99999999).

The spelling of 505505506 in words is "five hundred five million, five hundred five thousand, five hundred six".