550889 has 4 divisors (see below), whose sum is σ = 558720. Its totient is φ = 543060.

The previous prime is 550861. The next prime is 550903. The reversal of 550889 is 988055.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550859) 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, 3809 + ... + 3950.

It is an arithmetic number, because the mean of its divisors is an integer number (139680).

2⁵⁵⁰⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

550889 is a deficient number, since it is larger than the sum of its proper divisors (7831).

550889 is an equidigital number, since it uses as much as digits as its factorization.

550889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7830.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 550889 is about 742.2189703854. The cubic root of 550889 is about 81.9762473341.

The spelling of 550889 in words is "five hundred fifty thousand, eight hundred eighty-nine".