161443 has 8 divisors (see below), whose sum is σ = 176400. Its totient is φ = 147168.

The previous prime is 161411. The next prime is 161453. The reversal of 161443 is 344161.

It is a happy number.

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 161443 - 2⁵ = 161411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

161443 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 161443.

It is not an unprimeable number, because it can be changed into a prime (161453) 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, 405 + ... + 697.

It is an arithmetic number, because the mean of its divisors is an integer number (22050).

2¹⁶¹⁴⁴³ is an apocalyptic number.

161443 is a deficient number, since it is larger than the sum of its proper divisors (14957).

161443 is a wasteful number, since it uses less digits than its factorization.

161443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its digits is 288, while the sum is 19.

The square root of 161443 is about 401.7997013438. The cubic root of 161443 is about 54.4510685016.

The spelling of 161443 in words is "one hundred sixty-one thousand, four hundred forty-three".