550301220 has 288 divisors, whose sum is σ = 2109639168. Its totient is φ = 113135616.

The previous prime is 550301209. The next prime is 550301233. The reversal of 550301220 is 22103055.

It is a happy number.

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 = 550301193 and 550301202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 492102 + ... + 493218.

It is an arithmetic number, because the mean of its divisors is an integer number (7325136).

Almost surely, 2^550301220 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 550301220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054819584).

550301220 is an abundant number, since it is smaller than the sum of its proper divisors (1559337948).

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

550301220 is a wasteful number, since it uses less digits than its factorization.

550301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 550301220 is about 23458.4999520430. The cubic root of 550301220 is about 819.4708166081.

550301220 divided by its sum of digits (18) gives a triangular number (30572290 = T₇₈₁₉).

Adding to 550301220 its reverse (22103055), we get a palindrome (572404275).

The spelling of 550301220 in words is "five hundred fifty million, three hundred one thousand, two hundred twenty".