159797101 has 2 divisors, whose sum is σ = 159797102. Its totient is φ = 159797100.

The previous prime is 159797069. The next prime is 159797107. The reversal of 159797101 is 101797951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156225001 + 3572100 = 12499^2 + 1890^2 .

It is a cyclic number.

It is not a de Polignac number, because 159797101 - 2⁵ = 159797069 is a prime.

It is a super-2 number, since 2×159797101² = 51070226976008402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159797107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79898550 + 79898551.

It is an arithmetic number, because the mean of its divisors is an integer number (79898551).

Almost surely, 2^159797101 is an apocalyptic number.

It is an amenable number.

159797101 is a deficient number, since it is larger than the sum of its proper divisors (1).

159797101 is an equidigital number, since it uses as much as digits as its factorization.

159797101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 40.

The square root of 159797101 is about 12641.0878092038. The cubic root of 159797101 is about 542.6539459895.

The spelling of 159797101 in words is "one hundred fifty-nine million, seven hundred ninety-seven thousand, one hundred one".