5555889 has 12 divisors (see below), whose sum is σ = 8497476. Its totient is φ = 3485952.

The previous prime is 5555873. The next prime is 5555897. The reversal of 5555889 is 9885555.

It can be written as a sum of positive squares in 2 ways, for example, as 2433600 + 3122289 = 1560^2 + 1767^2 .

It is not a de Polignac number, because 5555889 - 2⁴ = 5555873 is a prime.

5555889 is a lucky number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (5555189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18004 + ... + 18309.

It is an arithmetic number, because the mean of its divisors is an integer number (708123).

Almost surely, 2^5555889 is an apocalyptic number.

It is an amenable number.

5555889 is a deficient number, since it is larger than the sum of its proper divisors (2941587).

5555889 is a wasteful number, since it uses less digits than its factorization.

5555889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36336 (or 36333 counting only the distinct ones).

The product of its digits is 360000, while the sum is 45.

The square root of 5555889 is about 2357.0933371422. The cubic root of 5555889 is about 177.1133048355.

The spelling of 5555889 in words is "five million, five hundred fifty-five thousand, eight hundred eighty-nine".