550423 has 4 divisors (see below), whose sum is σ = 555408. Its totient is φ = 545440.

The previous prime is 550379. The next prime is 550427. The reversal of 550423 is 324055.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324055 = 5 ⋅64811.

It is a cyclic number.

It is not a de Polignac number, because 550423 - 2⁹ = 549911 is a prime.

It is a Duffinian number.

550423 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 550423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550427) 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, 2323 + ... + 2548.

It is an arithmetic number, because the mean of its divisors is an integer number (138852).

2⁵⁵⁰⁴²³ is an apocalyptic number.

550423 is a deficient number, since it is larger than the sum of its proper divisors (4985).

550423 is a wasteful number, since it uses less digits than its factorization.

550423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984.

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

The square root of 550423 is about 741.9049804389. The cubic root of 550423 is about 81.9531260956.

Adding to 550423 its reverse (324055), we get a palindrome (874478).

The spelling of 550423 in words is "five hundred fifty thousand, four hundred twenty-three".