550844 has 24 divisors (see below), whose sum is σ = 1118208. Its totient is φ = 232560.

The previous prime is 550843. The next prime is 550859. The reversal of 550844 is 448055.

It is a super-2 number, since 2×550844² = 606858224672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550841) 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 7 ways as a sum of consecutive naturals, for example, 2789 + ... + 2979.

It is an arithmetic number, because the mean of its divisors is an integer number (46592).

2⁵⁵⁰⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

550844 is an abundant number, since it is smaller than the sum of its proper divisors (567364).

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

550844 is a wasteful number, since it uses less digits than its factorization.

550844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 550844 is about 742.1886552623. The cubic root of 550844 is about 81.9740151654.

Adding to 550844 its reverse (448055), we get a palindrome (998899).

The spelling of 550844 in words is "five hundred fifty thousand, eight hundred forty-four".