550421330 has 8 divisors (see below), whose sum is σ = 990758412. Its totient is φ = 220168528.

The previous prime is 550421329. The next prime is 550421353. The reversal of 550421330 is 33124055.

It can be written as a sum of positive squares in 2 ways, for example, as 550418521 + 2809 = 23461^2 + 53^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 550421296 and 550421305.

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 3 ways as a sum of consecutive naturals, for example, 27521057 + ... + 27521076.

Almost surely, 2^550421330 is an apocalyptic number.

550421330 is a deficient number, since it is larger than the sum of its proper divisors (440337082).

550421330 is a wasteful number, since it uses less digits than its factorization.

550421330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55042140.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 550421330 is about 23461.0598652320. The cubic root of 550421330 is about 819.5304321279.

Adding to 550421330 its reverse (33124055), we get a palindrome (583545385).

The spelling of 550421330 in words is "five hundred fifty million, four hundred twenty-one thousand, three hundred thirty".