5550505050821 has 2 divisors, whose sum is σ = 5550505050822. Its totient is φ = 5550505050820.

The previous prime is 5550505050809. The next prime is 5550505050823. The reversal of 5550505050821 is 1280505050555.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5233182388225 + 317322662596 = 2287615^2 + 563314^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550505050821 - 2¹⁰ = 5550505049797 is a prime.

Together with 5550505050823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5550505050823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775252525410 + 2775252525411.

It is an arithmetic number, because the mean of its divisors is an integer number (2775252525411).

Almost surely, 2^{5550505050821} is an apocalyptic number.

It is an amenable number.

5550505050821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550505050821 is an equidigital number, since it uses as much as digits as its factorization.

5550505050821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250000, while the sum is 41.

The spelling of 5550505050821 in words is "five trillion, five hundred fifty billion, five hundred five million, fifty thousand, eight hundred twenty-one".