159121271 has 2 divisors, whose sum is σ = 159121272. Its totient is φ = 159121270.

The previous prime is 159121243. The next prime is 159121279. The reversal of 159121271 is 172121951.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159121271 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 (159121279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79560635 + 79560636.

It is an arithmetic number, because the mean of its divisors is an integer number (79560636).

Almost surely, 2^159121271 is an apocalyptic number.

159121271 is a deficient number, since it is larger than the sum of its proper divisors (1).

159121271 is an equidigital number, since it uses as much as digits as its factorization.

159121271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 29.

The square root of 159121271 is about 12614.3280042973. The cubic root of 159121271 is about 541.8878493734.

The spelling of 159121271 in words is "one hundred fifty-nine million, one hundred twenty-one thousand, two hundred seventy-one".