187145 has 8 divisors (see below), whose sum is σ = 256704. Its totient is φ = 128304.

The previous prime is 187141. The next prime is 187163. The reversal of 187145 is 541781.

187145 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 a cyclic number.

It is not a de Polignac number, because 187145 - 2² = 187141 is a prime.

It is a Curzon number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (187141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2639 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (32088).

2¹⁸⁷¹⁴⁵ is an apocalyptic number.

It is an amenable number.

187145 is a deficient number, since it is larger than the sum of its proper divisors (69559).

187145 is an equidigital number, since it uses as much as digits as its factorization.

187145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5359.

The product of its digits is 1120, while the sum is 26.

The square root of 187145 is about 432.6025889890. The cubic root of 187145 is about 57.1995672127.

The spelling of 187145 in words is "one hundred eighty-seven thousand, one hundred forty-five".