158187 has 8 divisors (see below), whose sum is σ = 214336. Its totient is φ = 103752.

The previous prime is 158161. The next prime is 158189. The reversal of 158187 is 781851.

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

It is not a de Polignac number, because 158187 - 2⁸ = 157931 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (158189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193 + ... + 594.

It is an arithmetic number, because the mean of its divisors is an integer number (26792).

2¹⁵⁸¹⁸⁷ is an apocalyptic number.

158187 is a deficient number, since it is larger than the sum of its proper divisors (56149).

158187 is an equidigital number, since it uses as much as digits as its factorization.

158187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857.

The product of its digits is 2240, while the sum is 30.

The square root of 158187 is about 397.7272935065. The cubic root of 158187 is about 54.0825212913.

The spelling of 158187 in words is "one hundred fifty-eight thousand, one hundred eighty-seven".