550890 has 24 divisors (see below), whose sum is σ = 1432548. Its totient is φ = 146880.

The previous prime is 550861. The next prime is 550903. The reversal of 550890 is 98055.

It can be written as a sum of positive squares in 2 ways, for example, as 505521 + 45369 = 711^2 + 213^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 2971 + ... + 3150.

2⁵⁵⁰⁸⁹⁰ is an apocalyptic number.

550890 is an abundant number, since it is smaller than the sum of its proper divisors (881658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550890 is a wasteful number, since it uses less digits than its factorization.

550890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6134 (or 6131 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 550890 is about 742.2196440408. The cubic root of 550890 is about 81.9762969364.

The spelling of 550890 in words is "five hundred fifty thousand, eight hundred ninety".