43345 has 4 divisors (see below), whose sum is σ = 52020. Its totient is φ = 34672.

The previous prime is 43331. The next prime is 43391. The reversal of 43345 is 54334.

43345 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17424 + 25921 = 132^2 + 161^2 .

It is a cyclic number.

It is not a de Polignac number, because 43345 - 2⁵ = 43313 is a prime.

43345 is strictly pandigital in base 6.

43345 is a lucky number.

It is a nialpdrome in base 9 and base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4330 + ... + 4339.

It is an arithmetic number, because the mean of its divisors is an integer number (13005).

2⁴³³⁴⁵ is an apocalyptic number.

It is an amenable number.

43345 is a deficient number, since it is larger than the sum of its proper divisors (8675).

43345 is an equidigital number, since it uses as much as digits as its factorization.

43345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8674.

The product of its digits is 720, while the sum is 19.

The square root of 43345 is about 208.1946204877. The cubic root of 43345 is about 35.1274266633.

Adding to 43345 its reverse (54334), we get a palindrome (97679).

The spelling of 43345 in words is "forty-three thousand, three hundred forty-five".