171155957 has 8 divisors (see below), whose sum is σ = 196470336. Its totient is φ = 146057472.

The previous prime is 171155951. The next prime is 171156059. The reversal of 171155957 is 759551171.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171155957 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 (171155951) 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, 52268 + ... + 55445.

It is an arithmetic number, because the mean of its divisors is an integer number (24558792).

Almost surely, 2^171155957 is an apocalyptic number.

It is an amenable number.

171155957 is a deficient number, since it is larger than the sum of its proper divisors (25314379).

171155957 is a wasteful number, since it uses less digits than its factorization.

171155957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107947.

The product of its digits is 55125, while the sum is 41.

The square root of 171155957 is about 13082.6586365310. The cubic root of 171155957 is about 555.2185996009.

The spelling of 171155957 in words is "one hundred seventy-one million, one hundred fifty-five thousand, nine hundred fifty-seven".