551558889 has 80 divisors (see below), whose sum is σ = 985222656. Its totient is φ = 300931200.

The previous prime is 551558881. The next prime is 551558921. The reversal of 551558889 is 988855155.

551558889 is a `hidden beast` number, since 5 + 5 + 1 + 558 + 8 + 89 = 666.

It is not a de Polignac number, because 551558889 - 2³ = 551558881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551558881) 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 79 ways as a sum of consecutive naturals, for example, 1279504 + ... + 1279934.

Almost surely, 2^551558889 is an apocalyptic number.

It is an amenable number.

551558889 is a deficient number, since it is larger than the sum of its proper divisors (433663767).

551558889 is a wasteful number, since it uses less digits than its factorization.

551558889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 539 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 54.

The square root of 551558889 is about 23485.2909072892. The cubic root of 551558889 is about 820.0946197576.

The spelling of 551558889 in words is "five hundred fifty-one million, five hundred fifty-eight thousand, eight hundred eighty-nine".