555506551601 has 2 divisors, whose sum is σ = 555506551602. Its totient is φ = 555506551600.

The previous prime is 555506551547. The next prime is 555506551619. The reversal of 555506551601 is 106155605555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 551122125376 + 4384426225 = 742376^2 + 66215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-555506551601 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (555506551631) 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, 277753275800 + 277753275801.

It is an arithmetic number, because the mean of its divisors is an integer number (277753275801).

Almost surely, 2^555506551601 is an apocalyptic number.

It is an amenable number.

555506551601 is a deficient number, since it is larger than the sum of its proper divisors (1).

555506551601 is an equidigital number, since it uses as much as digits as its factorization.

555506551601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 555506551601 in words is "five hundred fifty-five billion, five hundred six million, five hundred fifty-one thousand, six hundred one".