159122861 has 2 divisors, whose sum is σ = 159122862. Its totient is φ = 159122860.

The previous prime is 159122851. The next prime is 159122881. The reversal of 159122861 is 168221951.

159122861 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., 145202500 + 13920361 = 12050^2 + 3731^2 .

It is an emirp because it is prime and its reverse (168221951) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159122861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159122851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79561430 + 79561431.

It is an arithmetic number, because the mean of its divisors is an integer number (79561431).

Almost surely, 2^159122861 is an apocalyptic number.

It is an amenable number.

159122861 is a deficient number, since it is larger than the sum of its proper divisors (1).

159122861 is an equidigital number, since it uses as much as digits as its factorization.

159122861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 35.

The square root of 159122861 is about 12614.3910277112. The cubic root of 159122861 is about 541.8896542836.

The spelling of 159122861 in words is "one hundred fifty-nine million, one hundred twenty-two thousand, eight hundred sixty-one".