550643022 has 80 divisors (see below), whose sum is σ = 1314902160. Its totient is φ = 171631872.

The previous prime is 550642951. The next prime is 550643029. The reversal of 550643022 is 220346055.

550643022 is a `hidden beast` number, since 550 + 64 + 30 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550643029) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 492408 + ... + 493524.

It is an arithmetic number, because the mean of its divisors is an integer number (16436277).

Almost surely, 2^550643022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550643022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657451080).

550643022 is an abundant number, since it is smaller than the sum of its proper divisors (764259138).

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

550643022 is a wasteful number, since it uses less digits than its factorization.

550643022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 550643022 is about 23465.7840695767. The cubic root of 550643022 is about 819.6404441884.

Adding to 550643022 its reverse (220346055), we get a palindrome (770989077).

The spelling of 550643022 in words is "five hundred fifty million, six hundred forty-three thousand, twenty-two".