197159 has 2 divisors, whose sum is σ = 197160. Its totient is φ = 197158.

The previous prime is 197147. The next prime is 197161. The reversal of 197159 is 951791.

It is a strong prime.

It is an emirp because it is prime and its reverse (951791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197159 is a prime.

It is a Sophie Germain prime.

Together with 197161, 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 (197059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98579 + 98580.

It is an arithmetic number, because the mean of its divisors is an integer number (98580).

2¹⁹⁷¹⁵⁹ is an apocalyptic number.

197159 is a deficient number, since it is larger than the sum of its proper divisors (1).

197159 is an equidigital number, since it uses as much as digits as its factorization.

197159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2835, while the sum is 32.

The square root of 197159 is about 444.0259001455. The cubic root of 197159 is about 58.2021286956.

The spelling of 197159 in words is "one hundred ninety-seven thousand, one hundred fifty-nine".