170157 has 8 divisors (see below), whose sum is σ = 244384. Its totient is φ = 104688.

The previous prime is 170141. The next prime is 170167. The reversal of 170157 is 751071.

170157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 170157 - 2⁴ = 170141 is a prime.

It is the 413-rd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 170157.

It is not an unprimeable number, because it can be changed into a prime (170167) by changing a digit.

It is a nontrivial repunit in base 412.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2143 + ... + 2220.

It is an arithmetic number, because the mean of its divisors is an integer number (30548).

2¹⁷⁰¹⁵⁷ is an apocalyptic number.

It is an amenable number.

170157 is a deficient number, since it is larger than the sum of its proper divisors (74227).

170157 is a wasteful number, since it uses less digits than its factorization.

170157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379.

The product of its (nonzero) digits is 245, while the sum is 21.

The square root of 170157 is about 412.5009090899. The cubic root of 170157 is about 55.4136307782.

The spelling of 170157 in words is "one hundred seventy thousand, one hundred fifty-seven".