556505505 has 64 divisors (see below), whose sum is σ = 1048723200. Its totient is φ = 279498240.

The previous prime is 556505503. The next prime is 556505531. The reversal of 556505505 is 505505655.

556505505 is a `hidden beast` number, since 5 + 56 + 50 + 550 + 5 = 666.

It is not a de Polignac number, because 556505505 - 2¹ = 556505503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 556505505.

It is not an unprimeable number, because it can be changed into a prime (556505503) 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 63 ways as a sum of consecutive naturals, for example, 158782 + ... + 162248.

It is an arithmetic number, because the mean of its divisors is an integer number (16386300).

Almost surely, 2^556505505 is an apocalyptic number.

It is an amenable number.

556505505 is a deficient number, since it is larger than the sum of its proper divisors (492217695).

556505505 is a wasteful number, since it uses less digits than its factorization.

556505505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551 (or 3545 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 556505505 is about 23590.3689034318. The cubic root of 556505505 is about 822.5389799925.

The spelling of 556505505 in words is "five hundred fifty-six million, five hundred five thousand, five hundred five".