6555445556 has 144 divisors (see below), whose sum is σ = 13783924224. Its totient is φ = 2718144000.

The previous prime is 6555445543. The next prime is 6555445619.

6555445556 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24189701 + ... + 24189971.

It is an arithmetic number, because the mean of its divisors is an integer number (95721696).

Almost surely, 2^6555445556 is an apocalyptic number.

It is an amenable number.

6555445556 is an abundant number, since it is smaller than the sum of its proper divisors (7228478668).

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

6555445556 is a wasteful number, since it uses less digits than its factorization.

6555445556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 401 counting only the distinct ones).

The product of its digits is 9000000, while the sum is 50.

The square root of 6555445556 is about 80965.7060489193. The cubic root of 6555445556 is about 1871.5470012843.

The spelling of 6555445556 in words is "six billion, five hundred fifty-five million, four hundred forty-five thousand, five hundred fifty-six".