171936497 has 2 divisors, whose sum is σ = 171936498. Its totient is φ = 171936496.

The previous prime is 171936463. The next prime is 171936503. The reversal of 171936497 is 794639171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128165041 + 43771456 = 11321^2 + 6616^2 .

It is a cyclic number.

It is not a de Polignac number, because 171936497 - 2⁶ = 171936433 is a prime.

It is not a weakly prime, because it can be changed into another prime (171936407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85968248 + 85968249.

It is an arithmetic number, because the mean of its divisors is an integer number (85968249).

Almost surely, 2^171936497 is an apocalyptic number.

It is an amenable number.

171936497 is a deficient number, since it is larger than the sum of its proper divisors (1).

171936497 is an equidigital number, since it uses as much as digits as its factorization.

171936497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 171936497 is about 13112.4557959217. The cubic root of 171936497 is about 556.0613265429.

The spelling of 171936497 in words is "one hundred seventy-one million, nine hundred thirty-six thousand, four hundred ninety-seven".