550637851 has 4 divisors (see below), whose sum is σ = 550684872. Its totient is φ = 550590832.

The previous prime is 550637849. The next prime is 550637869. The reversal of 550637851 is 158736055.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 550637851 - 2¹ = 550637849 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550637251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9591 + ... + 34543.

It is an arithmetic number, because the mean of its divisors is an integer number (137671218).

Almost surely, 2^550637851 is an apocalyptic number.

550637851 is a deficient number, since it is larger than the sum of its proper divisors (47021).

550637851 is a wasteful number, since it uses less digits than its factorization.

550637851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47020.

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 550637851 is about 23465.6738876172. The cubic root of 550637851 is about 819.6378784765.

It can be divided in two parts, 550 and 637851, that added together give a square (638401 = 799²).

The spelling of 550637851 in words is "five hundred fifty million, six hundred thirty-seven thousand, eight hundred fifty-one".