550505055557 has 2 divisors, whose sum is σ = 550505055558. Its totient is φ = 550505055556.

The previous prime is 550505055479. The next prime is 550505055601. The reversal of 550505055557 is 755550505055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547875314596 + 2629740961 = 740186^2 + 51281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550505055557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550505058557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275252527778 + 275252527779.

It is an arithmetic number, because the mean of its divisors is an integer number (275252527779).

Almost surely, 2^550505055557 is an apocalyptic number.

It is an amenable number.

550505055557 is a deficient number, since it is larger than the sum of its proper divisors (1).

550505055557 is an equidigital number, since it uses as much as digits as its factorization.

550505055557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2734375, while the sum is 47.

The spelling of 550505055557 in words is "five hundred fifty billion, five hundred five million, fifty-five thousand, five hundred fifty-seven".