855110161 has 2 divisors, whose sum is σ = 855110162. Its totient is φ = 855110160.

The previous prime is 855110159. The next prime is 855110171. The reversal of 855110161 is 161011558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 846810000 + 8300161 = 29100^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 855110161 - 2¹ = 855110159 is a prime.

Together with 855110159, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (855110171) 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, 427555080 + 427555081.

It is an arithmetic number, because the mean of its divisors is an integer number (427555081).

Almost surely, 2^855110161 is an apocalyptic number.

It is an amenable number.

855110161 is a deficient number, since it is larger than the sum of its proper divisors (1).

855110161 is an equidigital number, since it uses as much as digits as its factorization.

855110161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 28.

The square root of 855110161 is about 29242.2666871089. The cubic root of 855110161 is about 949.1627567145.

The spelling of 855110161 in words is "eight hundred fifty-five million, one hundred ten thousand, one hundred sixty-one".