171155113 has 4 divisors (see below), whose sum is σ = 171238228. Its totient is φ = 171072000.

The previous prime is 171155087. The next prime is 171155137. The reversal of 171155113 is 311551171.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57881664 + 113273449 = 7608^2 + 10643^2 .

It is a cyclic number.

It is not a de Polignac number, because 171155113 - 2⁹ = 171154601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171155713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38388 + ... + 42613.

It is an arithmetic number, because the mean of its divisors is an integer number (42809557).

Almost surely, 2^171155113 is an apocalyptic number.

It is an amenable number.

171155113 is a deficient number, since it is larger than the sum of its proper divisors (83115).

171155113 is an equidigital number, since it uses as much as digits as its factorization.

171155113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83114.

The product of its digits is 525, while the sum is 25.

The square root of 171155113 is about 13082.6263800508. The cubic root of 171155113 is about 555.2176869727.

The spelling of 171155113 in words is "one hundred seventy-one million, one hundred fifty-five thousand, one hundred thirteen".