550643530 has 16 divisors (see below), whose sum is σ = 1015333704. Its totient is φ = 214885120.

The previous prime is 550643441. The next prime is 550643537. The reversal of 550643530 is 35346055.

It can be written as a sum of positive squares in 4 ways, for example, as 177342489 + 373301041 = 13317^2 + 19321^2 .

It is a junction number, because it is equal to n+sod(n) for n = 550643492 and 550643501.

It is not an unprimeable number, because it can be changed into a prime (550643537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671107 + ... + 671926.

Almost surely, 2^550643530 is an apocalyptic number.

550643530 is a deficient number, since it is larger than the sum of its proper divisors (464690174).

550643530 is a wasteful number, since it uses less digits than its factorization.

550643530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343081.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 550643530 is about 23465.7948938450. The cubic root of 550643530 is about 819.6406962435.

Adding to 550643530 its reverse (35346055), we get a palindrome (585989585).

The spelling of 550643530 in words is "five hundred fifty million, six hundred forty-three thousand, five hundred thirty".