55010516541221 has 2 divisors, whose sum is σ = 55010516541222. Its totient is φ = 55010516541220.

The previous prime is 55010516541157. The next prime is 55010516541251. The reversal of 55010516541221 is 12214561501055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41019400720321 + 13991115820900 = 6404639^2 + 3740470^2 .

It is a cyclic number.

It is not a de Polignac number, because 55010516541221 - 2⁶ = 55010516541157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55010516541251) 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 as a sum of consecutive naturals, namely, 27505258270610 + 27505258270611.

It is an arithmetic number, because the mean of its divisors is an integer number (27505258270611).

Almost surely, 2^{55010516541221} is an apocalyptic number.

It is an amenable number.

55010516541221 is a deficient number, since it is larger than the sum of its proper divisors (1).

55010516541221 is an equidigital number, since it uses as much as digits as its factorization.

55010516541221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60000, while the sum is 38.

The spelling of 55010516541221 in words is "fifty-five trillion, ten billion, five hundred sixteen million, five hundred forty-one thousand, two hundred twenty-one".