5555506005551 has 2 divisors, whose sum is σ = 5555506005552. Its totient is φ = 5555506005550.

The previous prime is 5555506005547. The next prime is 5555506005563. The reversal of 5555506005551 is 1555006055555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5555506005551 - 2² = 5555506005547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5555506005496 and 5555506005505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5555506005151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777753002775 + 2777753002776.

It is an arithmetic number, because the mean of its divisors is an integer number (2777753002776).

Almost surely, 2^{5555506005551} is an apocalyptic number.

5555506005551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555506005551 is an equidigital number, since it uses as much as digits as its factorization.

5555506005551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2343750, while the sum is 47.

The spelling of 5555506005551 in words is "five trillion, five hundred fifty-five billion, five hundred six million, five thousand, five hundred fifty-one".