159173197 has 2 divisors, whose sum is σ = 159173198. Its totient is φ = 159173196.

The previous prime is 159173153. The next prime is 159173233. The reversal of 159173197 is 791371951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155276521 + 3896676 = 12461^2 + 1974^2 .

It is a cyclic number.

It is not a de Polignac number, because 159173197 - 2¹¹ = 159171149 is a prime.

It is a super-2 number, since 2×159173197² = 50672213286401618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159173107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79586598 + 79586599.

It is an arithmetic number, because the mean of its divisors is an integer number (79586599).

Almost surely, 2^159173197 is an apocalyptic number.

It is an amenable number.

159173197 is a deficient number, since it is larger than the sum of its proper divisors (1).

159173197 is an equidigital number, since it uses as much as digits as its factorization.

159173197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59535, while the sum is 43.

The square root of 159173197 is about 12616.3860514808. The cubic root of 159173197 is about 541.9467876663.

The spelling of 159173197 in words is "one hundred fifty-nine million, one hundred seventy-three thousand, one hundred ninety-seven".