550840320 has 288 divisors, whose sum is σ = 1967565600. Its totient is φ = 142442496.

The previous prime is 550840247. The next prime is 550840321. The reversal of 550840320 is 23048055.

550840320 is a `hidden beast` number, since 550 + 84 + 0 + 32 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is not an unprimeable number, because it can be changed into a prime (550840321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3962811 + ... + 3962949.

It is an arithmetic number, because the mean of its divisors is an integer number (6831825).

Almost surely, 2^550840320 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 550840320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983782800).

550840320 is an abundant number, since it is smaller than the sum of its proper divisors (1416725280).

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

550840320 is a wasteful number, since it uses less digits than its factorization.

550840320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 550840320 is about 23469.9876437973. The cubic root of 550840320 is about 819.7383261818.

Adding to 550840320 its reverse (23048055), we get a palindrome (573888375).

The spelling of 550840320 in words is "five hundred fifty million, eight hundred forty thousand, three hundred twenty".