550505505091 has 2 divisors, whose sum is σ = 550505505092. Its totient is φ = 550505505090.

The previous prime is 550505505041. The next prime is 550505505097. The reversal of 550505505091 is 190505505055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550505505091 - 2¹¹ = 550505503043 is a prime.

It is a super-2 number, since 2×550505505091² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550505505097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275252752545 + 275252752546.

It is an arithmetic number, because the mean of its divisors is an integer number (275252752546).

Almost surely, 2^550505505091 is an apocalyptic number.

550505505091 is a deficient number, since it is larger than the sum of its proper divisors (1).

550505505091 is an equidigital number, since it uses as much as digits as its factorization.

550505505091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140625, while the sum is 40.

The spelling of 550505505091 in words is "five hundred fifty billion, five hundred five million, five hundred five thousand, ninety-one".