5551869555 has 24 divisors (see below), whose sum is σ = 9781003440. Its totient is φ = 2912454720.

The previous prime is 5551869541. The next prime is 5551869581. The reversal of 5551869555 is 5559681555.

5551869555 is a `hidden beast` number, since 5 + 5 + 5 + 1 + 86 + 9 + 555 = 666.

It is not a de Polignac number, because 5551869555 - 2⁴ = 5551869539 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 1008525 + ... + 1014014.

It is an arithmetic number, because the mean of its divisors is an integer number (407541810).

Almost surely, 2^5551869555 is an apocalyptic number.

5551869555 is a deficient number, since it is larger than the sum of its proper divisors (4229133885).

5551869555 is a wasteful number, since it uses less digits than its factorization.

5551869555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022611 (or 2022608 counting only the distinct ones).

The product of its digits is 6750000, while the sum is 54.

The square root of 5551869555 is about 74510.8687038341. The cubic root of 5551869555 is about 1770.7058326373.

The spelling of 5551869555 in words is "five billion, five hundred fifty-one million, eight hundred sixty-nine thousand, five hundred fifty-five".