550243 has 4 divisors (see below), whose sum is σ = 553288. Its totient is φ = 547200.

The previous prime is 550241. The next prime is 550267. The reversal of 550243 is 342055.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550243 - 2¹ = 550241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550243.

It is not an unprimeable number, because it can be changed into a prime (550241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1233 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (138322).

2⁵⁵⁰²⁴³ is an apocalyptic number.

550243 is the 397-th centered heptagonal number.

550243 is a deficient number, since it is larger than the sum of its proper divisors (3045).

550243 is a wasteful number, since it uses less digits than its factorization.

550243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 550243 is about 741.7836611843. The cubic root of 550243 is about 81.9441916513.

Adding to 550243 its reverse (342055), we get a palindrome (892298).

The spelling of 550243 in words is "five hundred fifty thousand, two hundred forty-three".