5555050550521 has 2 divisors, whose sum is σ = 5555050550522. Its totient is φ = 5555050550520.

The previous prime is 5555050550503. The next prime is 5555050550573. The reversal of 5555050550521 is 1250550505555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5107939005625 + 447111544896 = 2260075^2 + 668664^2 .

It is a cyclic number.

It is not a de Polignac number, because 5555050550521 - 2²⁷ = 5554916332793 is a prime.

It is not a weakly prime, because it can be changed into another prime (5555050557521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777525275260 + 2777525275261.

It is an arithmetic number, because the mean of its divisors is an integer number (2777525275261).

Almost surely, 2^{5555050550521} is an apocalyptic number.

It is an amenable number.

5555050550521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555050550521 is an equidigital number, since it uses as much as digits as its factorization.

5555050550521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 781250, while the sum is 43.

The spelling of 5555050550521 in words is "five trillion, five hundred fifty-five billion, fifty million, five hundred fifty thousand, five hundred twenty-one".