55500550505489 has 2 divisors, whose sum is σ = 55500550505490. Its totient is φ = 55500550505488.

The previous prime is 55500550505473. The next prime is 55500550505503. The reversal of 55500550505489 is 98450505500555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47925395215489 + 7575155290000 = 6922817^2 + 2752300^2 .

It is a cyclic number.

It is not a de Polignac number, because 55500550505489 - 2⁴ = 55500550505473 is a prime.

It is a super-2 number, since 2×55500550505489² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55500550508489) 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, 27750275252744 + 27750275252745.

It is an arithmetic number, because the mean of its divisors is an integer number (27750275252745).

Almost surely, 2^{55500550505489} is an apocalyptic number.

It is an amenable number.

55500550505489 is a deficient number, since it is larger than the sum of its proper divisors (1).

55500550505489 is an equidigital number, since it uses as much as digits as its factorization.

55500550505489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500000, while the sum is 56.

The spelling of 55500550505489 in words is "fifty-five trillion, five hundred billion, five hundred fifty million, five hundred five thousand, four hundred eighty-nine".