173973197 has 2 divisors, whose sum is σ = 173973198. Its totient is φ = 173973196.

The previous prime is 173973187. The next prime is 173973199. The reversal of 173973197 is 791379371.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147233956 + 26739241 = 12134^2 + 5171^2 .

It is a cyclic number.

It is not a de Polignac number, because 173973197 - 2⁴ = 173973181 is a prime.

Together with 173973199, 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 (173973199) 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, 86986598 + 86986599.

It is an arithmetic number, because the mean of its divisors is an integer number (86986599).

Almost surely, 2^173973197 is an apocalyptic number.

It is an amenable number.

173973197 is a deficient number, since it is larger than the sum of its proper divisors (1).

173973197 is an equidigital number, since it uses as much as digits as its factorization.

173973197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250047, while the sum is 47.

The square root of 173973197 is about 13189.8899540519. The cubic root of 173973197 is about 558.2483499871.

The spelling of 173973197 in words is "one hundred seventy-three million, nine hundred seventy-three thousand, one hundred ninety-seven".