168157 has 4 divisors (see below), whose sum is σ = 183456. Its totient is φ = 152860.

The previous prime is 168151. The next prime is 168193. The reversal of 168157 is 751861.

It is a happy number.

168157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751861 = 11 ⋅68351.

It is a cyclic number.

It is not a de Polignac number, because 168157 - 2⁷ = 168029 is a prime.

It is a Duffinian number.

168157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168151) 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, 7633 + ... + 7654.

It is an arithmetic number, because the mean of its divisors is an integer number (45864).

2¹⁶⁸¹⁵⁷ is an apocalyptic number.

It is an amenable number.

168157 is a deficient number, since it is larger than the sum of its proper divisors (15299).

168157 is a wasteful number, since it uses less digits than its factorization.

168157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15298.

The product of its digits is 1680, while the sum is 28.

The square root of 168157 is about 410.0695063035. The cubic root of 168157 is about 55.1956667116.

It can be divided in two parts, 168 and 157, that added together give a triangular number (325 = T₂₅).

The spelling of 168157 in words is "one hundred sixty-eight thousand, one hundred fifty-seven".