550543 has 4 divisors (see below), whose sum is σ = 629200. Its totient is φ = 471888.

The previous prime is 550541. The next prime is 550553. The reversal of 550543 is 345055.

It is a happy number.

550543 is nontrivially palindromic in base 6.

550543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345055 = 5 ⋅69011.

It is a cyclic number.

It is not a de Polignac number, because 550543 - 2¹ = 550541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550541) 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, 39318 + ... + 39331.

It is an arithmetic number, because the mean of its divisors is an integer number (157300).

2⁵⁵⁰⁵⁴³ is an apocalyptic number.

550543 is a deficient number, since it is larger than the sum of its proper divisors (78657).

550543 is an equidigital number, since it uses as much as digits as its factorization.

550543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78656.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 550543 is about 741.9858489217. The cubic root of 550543 is about 81.9590813098.

Adding to 550543 its reverse (345055), we get a palindrome (895598).

The spelling of 550543 in words is "five hundred fifty thousand, five hundred forty-three".