550222420 has 96 divisors (see below), whose sum is σ = 1300561920. Its totient is φ = 193818240.

The previous prime is 550222397. The next prime is 550222429. The reversal of 550222420 is 24222055.

It is a happy number.

It is a super-2 number, since 2×550222420² = 605489422941312800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 550222391 and 550222400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550222429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1312971 + ... + 1313389.

It is an arithmetic number, because the mean of its divisors is an integer number (13547520).

Almost surely, 2^550222420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550222420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650280960).

550222420 is an abundant number, since it is smaller than the sum of its proper divisors (750339500).

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

550222420 is a wasteful number, since it uses less digits than its factorization.

550222420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 550222420 is about 23456.8203301300. The cubic root of 550222420 is about 819.4317002233.

Adding to 550222420 its reverse (24222055), we get a palindrome (574444475).

The spelling of 550222420 in words is "five hundred fifty million, two hundred twenty-two thousand, four hundred twenty".