550303920 has 120 divisors (see below), whose sum is σ = 1854122400. Its totient is φ = 146270208.

The previous prime is 550303891. The next prime is 550303921. The reversal of 550303920 is 29303055.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (550303921) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 257416 + ... + 259544.

It is an arithmetic number, because the mean of its divisors is an integer number (15451020).

Almost surely, 2^550303920 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 550303920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927061200).

550303920 is an abundant number, since it is smaller than the sum of its proper divisors (1303818480).

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

550303920 is a wasteful number, since it uses less digits than its factorization.

550303920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507 (or 2498 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 550303920 is about 23458.5575004091. The cubic root of 550303920 is about 819.4721568242.

Adding to 550303920 its reverse (29303055), we get a palindrome (579606975).

The spelling of 550303920 in words is "five hundred fifty million, three hundred three thousand, nine hundred twenty".