550820844 has 96 divisors (see below), whose sum is σ = 1645199360. Its totient is φ = 156110976.

The previous prime is 550820833. The next prime is 550820861. The reversal of 550820844 is 448028055.

550820844 is a `hidden beast` number, since 550 + 8 + 20 + 84 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 550820799 and 550820808.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93144 + ... + 98880.

Almost surely, 2^550820844 is an apocalyptic number.

550820844 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550820844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822599680).

550820844 is an abundant number, since it is smaller than the sum of its proper divisors (1094378516).

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

550820844 is a wasteful number, since it uses less digits than its factorization.

550820844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884 (or 5876 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 550820844 is about 23469.5727272569. The cubic root of 550820844 is about 819.7286649356.

Adding to 550820844 its reverse (448028055), we get a palindrome (998848899).

The spelling of 550820844 in words is "five hundred fifty million, eight hundred twenty thousand, eight hundred forty-four".