550233220 has 24 divisors (see below), whose sum is σ = 1223460504. Its totient is φ = 207146496.

The previous prime is 550233181. The next prime is 550233223. The reversal of 550233220 is 22332055.

It can be written as a sum of positive squares in 4 ways, for example, as 11343424 + 538889796 = 3368^2 + 23214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 550233191 and 550233200.

It is not an unprimeable number, because it can be changed into a prime (550233223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808827 + ... + 809506.

It is an arithmetic number, because the mean of its divisors is an integer number (50977521).

Almost surely, 2^550233220 is an apocalyptic number.

It is an amenable number.

550233220 is an abundant number, since it is smaller than the sum of its proper divisors (673227284).

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

550233220 is a wasteful number, since it uses less digits than its factorization.

550233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618359 (or 1618357 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 550233220 is about 23457.0505392302. The cubic root of 550233220 is about 819.4370615731.

Adding to 550233220 its reverse (22332055), we get a palindrome (572565275).

The spelling of 550233220 in words is "five hundred fifty million, two hundred thirty-three thousand, two hundred twenty".