550355165161 has 2 divisors, whose sum is σ = 550355165162. Its totient is φ = 550355165160.

The previous prime is 550355165149. The next prime is 550355165201. The reversal of 550355165161 is 161561553055.

550355165161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322760334400 + 227594830761 = 568120^2 + 477069^2 .

It is a cyclic number.

It is not a de Polignac number, because 550355165161 - 2⁷ = 550355165033 is a prime.

It is not a weakly prime, because it can be changed into another prime (550355165461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275177582580 + 275177582581.

It is an arithmetic number, because the mean of its divisors is an integer number (275177582581).

Almost surely, 2^550355165161 is an apocalyptic number.

It is an amenable number.

550355165161 is a deficient number, since it is larger than the sum of its proper divisors (1).

550355165161 is an equidigital number, since it uses as much as digits as its factorization.

550355165161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 337500, while the sum is 43.

The spelling of 550355165161 in words is "five hundred fifty billion, three hundred fifty-five million, one hundred sixty-five thousand, one hundred sixty-one".