555889 has 4 divisors (see below), whose sum is σ = 557424. Its totient is φ = 554356.

The previous prime is 555871. The next prime is 555931. The reversal of 555889 is 988555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 988555 = 5 ⋅197711.

It is a cyclic number.

It is not a de Polignac number, because 555889 - 2⁵ = 555857 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (555829) 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 3 ways as a sum of consecutive naturals, for example, 114 + ... + 1060.

It is an arithmetic number, because the mean of its divisors is an integer number (139356).

2⁵⁵⁵⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

555889 is a deficient number, since it is larger than the sum of its proper divisors (1535).

555889 is an equidigital number, since it uses as much as digits as its factorization.

555889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534.

The product of its digits is 72000, while the sum is 40.

The square root of 555889 is about 745.5796402800. The cubic root of 555889 is about 82.2235127493.

It can be divided in two parts, 555 and 889, that added together give a square (1444 = 38²).

The spelling of 555889 in words is "five hundred fifty-five thousand, eight hundred eighty-nine".