5505550505251 has 2 divisors, whose sum is σ = 5505550505252. Its totient is φ = 5505550505250.

The previous prime is 5505550505249. The next prime is 5505550505269. The reversal of 5505550505251 is 1525050555055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5505550505251 - 2¹ = 5505550505249 is a prime.

It is a super-2 number, since 2×5505550505251² (a number of 26 digits) contains 22 as substring.

Together with 5505550505249, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5505550505198 and 5505550505207.

It is not a weakly prime, because it can be changed into another prime (5505550503251) 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, 2752775252625 + 2752775252626.

It is an arithmetic number, because the mean of its divisors is an integer number (2752775252626).

Almost surely, 2^{5505550505251} is an apocalyptic number.

5505550505251 is a deficient number, since it is larger than the sum of its proper divisors (1).

5505550505251 is an equidigital number, since it uses as much as digits as its factorization.

5505550505251 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 5505550505251 in words is "five trillion, five hundred five billion, five hundred fifty million, five hundred five thousand, two hundred fifty-one".