195257117 has 8 divisors (see below), whose sum is σ = 213200640. Its totient is φ = 177345760.

The previous prime is 195257113. The next prime is 195257119. The reversal of 195257117 is 711752591.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195257117 - 2² = 195257113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195257113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5684 + ... + 20562.

It is an arithmetic number, because the mean of its divisors is an integer number (26650080).

Almost surely, 2^195257117 is an apocalyptic number.

It is an amenable number.

195257117 is a deficient number, since it is larger than the sum of its proper divisors (17943523).

195257117 is a wasteful number, since it uses less digits than its factorization.

195257117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16083.

The product of its digits is 22050, while the sum is 38.

The square root of 195257117 is about 13973.4432764441. The cubic root of 195257117 is about 580.1437584595.

The spelling of 195257117 in words is "one hundred ninety-five million, two hundred fifty-seven thousand, one hundred seventeen".