50505500550521 has 2 divisors, whose sum is σ = 50505500550522. Its totient is φ = 50505500550520.

The previous prime is 50505500550403. The next prime is 50505500550569. The reversal of 50505500550521 is 12505500550505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40296964344121 + 10208536206400 = 6347989^2 + 3195080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50505500550521 is a prime.

It is not a weakly prime, because it can be changed into another prime (50505500550221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25252750275260 + 25252750275261.

It is an arithmetic number, because the mean of its divisors is an integer number (25252750275261).

Almost surely, 2^{50505500550521} is an apocalyptic number.

It is an amenable number.

50505500550521 is a deficient number, since it is larger than the sum of its proper divisors (1).

50505500550521 is an equidigital number, since it uses as much as digits as its factorization.

50505500550521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156250, while the sum is 38.

The spelling of 50505500550521 in words is "fifty trillion, five hundred five billion, five hundred million, five hundred fifty thousand, five hundred twenty-one".