550422 has 16 divisors (see below), whose sum is σ = 1223280. Its totient is φ = 183456.

The previous prime is 550379. The next prime is 550427. The reversal of 550422 is 224055.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 550395 and 550404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550427) by changing a digit.

550422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5043 + ... + 5150.

It is an arithmetic number, because the mean of its divisors is an integer number (76455).

2⁵⁵⁰⁴²² is an apocalyptic number.

550422 is an abundant number, since it is smaller than the sum of its proper divisors (672858).

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

550422 is a wasteful number, since it uses less digits than its factorization.

550422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10204 (or 10198 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 550422 is about 741.9043064978. The cubic root of 550422 is about 81.9530764652.

Adding to 550422 its reverse (224055), we get a palindrome (774477).

The spelling of 550422 in words is "five hundred fifty thousand, four hundred twenty-two".