157187 has 4 divisors (see below), whose sum is σ = 165480. Its totient is φ = 148896.

The previous prime is 157181. The next prime is 157189. The reversal of 157187 is 781751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781751 = 47 ⋅16633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4118 + ... + 4155.

It is an arithmetic number, because the mean of its divisors is an integer number (41370).

2¹⁵⁷¹⁸⁷ is an apocalyptic number.

157187 is a deficient number, since it is larger than the sum of its proper divisors (8293).

157187 is an equidigital number, since it uses as much as digits as its factorization.

157187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8292.

The product of its digits is 1960, while the sum is 29.

The square root of 157187 is about 396.4681576117. The cubic root of 157187 is about 53.9683170341.

The spelling of 157187 in words is "one hundred fifty-seven thousand, one hundred eighty-seven".