161147 has 4 divisors (see below), whose sum is σ = 184176. Its totient is φ = 138120.

The previous prime is 161141. The next prime is 161149. The reversal of 161147 is 741161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741161 = 163 ⋅4547.

It is a cyclic number.

It is not a de Polignac number, because 161147 - 2¹² = 157051 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161147.

It is not an unprimeable number, because it can be changed into a prime (161141) 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, 11504 + ... + 11517.

It is an arithmetic number, because the mean of its divisors is an integer number (46044).

2¹⁶¹¹⁴⁷ is an apocalyptic number.

161147 is a deficient number, since it is larger than the sum of its proper divisors (23029).

161147 is an equidigital number, since it uses as much as digits as its factorization.

161147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23028.

The product of its digits is 168, while the sum is 20.

The square root of 161147 is about 401.4311896203. The cubic root of 161147 is about 54.4177701102.

The spelling of 161147 in words is "one hundred sixty-one thousand, one hundred forty-seven".