5551056566 has 16 divisors (see below), whose sum is σ = 9094776768. Its totient is φ = 2520088200.

The previous prime is 5551056521. The next prime is 5551056611. The reversal of 5551056566 is 6656501555.

It is an interprime number because it is at equal distance from previous prime (5551056521) and next prime (5551056611).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137720 + ... + 173403.

It is an arithmetic number, because the mean of its divisors is an integer number (568423548).

Almost surely, 2^5551056566 is an apocalyptic number.

5551056566 is a deficient number, since it is larger than the sum of its proper divisors (3543720202).

5551056566 is a wasteful number, since it uses less digits than its factorization.

5551056566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311947.

The product of its (nonzero) digits is 675000, while the sum is 44.

The square root of 5551056566 is about 74505.4129979829. The cubic root of 5551056566 is about 1770.6193972108.

The spelling of 5551056566 in words is "five billion, five hundred fifty-one million, fifty-six thousand, five hundred sixty-six".