159897077 has 2 divisors, whose sum is σ = 159897078. Its totient is φ = 159897076.

The previous prime is 159897047. The next prime is 159897079. The reversal of 159897077 is 770798951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84015556 + 75881521 = 9166^2 + 8711^2 .

It is a cyclic number.

It is not a de Polignac number, because 159897077 - 2⁶ = 159897013 is a prime.

Together with 159897079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159897079) 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, 79948538 + 79948539.

It is an arithmetic number, because the mean of its divisors is an integer number (79948539).

Almost surely, 2^159897077 is an apocalyptic number.

It is an amenable number.

159897077 is a deficient number, since it is larger than the sum of its proper divisors (1).

159897077 is an equidigital number, since it uses as much as digits as its factorization.

159897077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1111320, while the sum is 53.

The square root of 159897077 is about 12645.0415974009. The cubic root of 159897077 is about 542.7670916813.

The spelling of 159897077 in words is "one hundred fifty-nine million, eight hundred ninety-seven thousand, seventy-seven".