5500553452721 has 2 divisors, whose sum is σ = 5500553452722. Its totient is φ = 5500553452720.

The previous prime is 5500553452687. The next prime is 5500553452727. The reversal of 5500553452721 is 1272543550055.

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., 5492156296225 + 8397156496 = 2343535^2 + 91636^2 .

It is a cyclic number.

It is not a de Polignac number, because 5500553452721 - 2⁶ = 5500553452657 is a prime.

It is not a weakly prime, because it can be changed into another prime (5500553452727) 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, 2750276726360 + 2750276726361.

It is an arithmetic number, because the mean of its divisors is an integer number (2750276726361).

Almost surely, 2^{5500553452721} is an apocalyptic number.

It is an amenable number.

5500553452721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5500553452721 is an equidigital number, since it uses as much as digits as its factorization.

5500553452721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050000, while the sum is 44.

The spelling of 5500553452721 in words is "five trillion, five hundred billion, five hundred fifty-three million, four hundred fifty-two thousand, seven hundred twenty-one".