171395117 has 6 divisors (see below), whose sum is σ = 172560654. Its totient is φ = 170237400.

The previous prime is 171395113. The next prime is 171395171. The reversal of 171395117 is 711593171.

It can be written as a sum of positive squares in only one way, i.e., 168636196 + 2758921 = 12986^2 + 1661^2 .

It is not a de Polignac number, because 171395117 - 2² = 171395113 is a prime.

It is a super-2 number, since 2×171395117² = 58752572262887378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171395113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19043 + ... + 26559.

It is an arithmetic number, because the mean of its divisors is an integer number (28760109).

Almost surely, 2^171395117 is an apocalyptic number.

It is an amenable number.

171395117 is a deficient number, since it is larger than the sum of its proper divisors (1165537).

171395117 is an frugal number, since it uses more digits than its factorization.

171395117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7819 (or 7668 counting only the distinct ones).

The product of its digits is 6615, while the sum is 35.

The square root of 171395117 is about 13091.7957897303. The cubic root of 171395117 is about 555.4770856473.

The spelling of 171395117 in words is "one hundred seventy-one million, three hundred ninety-five thousand, one hundred seventeen".