550438820 has 48 divisors (see below), whose sum is σ = 1181295360. Its totient is φ = 215394816.

The previous prime is 550438799. The next prime is 550438841. The reversal of 550438820 is 28834055.

It is an interprime number because it is at equal distance from previous prime (550438799) and next prime (550438841).

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 15 ways as a sum of consecutive naturals, for example, 176999 + ... + 180081.

It is an arithmetic number, because the mean of its divisors is an integer number (24610320).

Almost surely, 2^550438820 is an apocalyptic number.

It is an amenable number.

550438820 is an abundant number, since it is smaller than the sum of its proper divisors (630856540).

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

550438820 is a wasteful number, since it uses less digits than its factorization.

550438820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284 (or 3282 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 550438820 is about 23461.4326075796. The cubic root of 550438820 is about 819.5391124089.

The spelling of 550438820 in words is "five hundred fifty million, four hundred thirty-eight thousand, eight hundred twenty".