443161 has 2 divisors, whose sum is σ = 443162. Its totient is φ = 443160.

The previous prime is 443159. The next prime is 443167. The reversal of 443161 is 161344.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235225 + 207936 = 485^2 + 456^2 .

It is a cyclic number.

It is not a de Polignac number, because 443161 - 2¹ = 443159 is a prime.

Together with 443159, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (443167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221580 + 221581.

It is an arithmetic number, because the mean of its divisors is an integer number (221581).

2⁴⁴³¹⁶¹ is an apocalyptic number.

It is an amenable number.

443161 is a deficient number, since it is larger than the sum of its proper divisors (1).

443161 is an equidigital number, since it uses as much as digits as its factorization.

443161 is an odious number, because the sum of its binary digits is odd.

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

The square root of 443161 is about 665.7033874031. The cubic root of 443161 is about 76.2407531562.

The spelling of 443161 in words is "four hundred forty-three thousand, one hundred sixty-one".