550468021 has 4 divisors (see below), whose sum is σ = 550517932. Its totient is φ = 550418112.

The previous prime is 550468013. The next prime is 550468049. The reversal of 550468021 is 120864055.

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 can be written as a sum of positive squares in 2 ways, for example, as 375196900 + 175271121 = 19370^2 + 13239^2 .

It is a cyclic number.

It is not a de Polignac number, because 550468021 - 2³ = 550468013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550468001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276 + ... + 33181.

It is an arithmetic number, because the mean of its divisors is an integer number (137629483).

Almost surely, 2^550468021 is an apocalyptic number.

It is an amenable number.

550468021 is a deficient number, since it is larger than the sum of its proper divisors (49911).

550468021 is a wasteful number, since it uses less digits than its factorization.

550468021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49910.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 550468021 is about 23462.0549185275. The cubic root of 550468021 is about 819.5536044454.

The spelling of 550468021 in words is "five hundred fifty million, four hundred sixty-eight thousand, twenty-one".