550843 has 2 divisors, whose sum is σ = 550844. Its totient is φ = 550842.

The previous prime is 550841. The next prime is 550859. The reversal of 550843 is 348055.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550843 - 2¹ = 550841 is a prime.

Together with 550841, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (550841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275421 + 275422.

It is an arithmetic number, because the mean of its divisors is an integer number (275422).

2⁵⁵⁰⁸⁴³ is an apocalyptic number.

550843 is a deficient number, since it is larger than the sum of its proper divisors (1).

550843 is an equidigital number, since it uses as much as digits as its factorization.

550843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 550843 is about 742.1879815788. The cubic root of 550843 is about 81.9739655602.

Adding to 550843 its reverse (348055), we get a palindrome (898898).

The spelling of 550843 in words is "five hundred fifty thousand, eight hundred forty-three".