505505056 has 48 divisors (see below), whose sum is σ = 1141632576. Its totient is φ = 215836416.

The previous prime is 505505041. The next prime is 505505083. The reversal of 505505056 is 650505505.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 57975 + ... + 66121.

It is an arithmetic number, because the mean of its divisors is an integer number (23784012).

Almost surely, 2^505505056 is an apocalyptic number.

505505056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505505056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570816288).

505505056 is an abundant number, since it is smaller than the sum of its proper divisors (636127520).

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

505505056 is a wasteful number, since it uses less digits than its factorization.

505505056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8441 (or 8433 counting only the distinct ones).

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

The square root of 505505056 is about 22483.4395945104. The cubic root of 505505056 is about 796.6028109701.

The spelling of 505505056 in words is "five hundred five million, five hundred five thousand, fifty-six".