161187 has 8 divisors (see below), whose sum is σ = 231504. Its totient is φ = 99168.

The previous prime is 161167. The next prime is 161201. The reversal of 161187 is 781161.

161187 is digitally balanced in base 7, 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 161187 - 2⁶ = 161123 is a prime.

161187 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (161137) 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, 2028 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (28938).

2¹⁶¹¹⁸⁷ is an apocalyptic number.

161187 is a deficient number, since it is larger than the sum of its proper divisors (70317).

161187 is a wasteful number, since it uses less digits than its factorization.

161187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149.

The product of its digits is 336, while the sum is 24.

The square root of 161187 is about 401.4810082681. The cubic root of 161187 is about 54.4222722743.

The spelling of 161187 in words is "one hundred sixty-one thousand, one hundred eighty-seven".