43001 has 4 divisors (see below), whose sum is σ = 49152. Its totient is φ = 36852.

The previous prime is 42989. The next prime is 43003. The reversal of 43001 is 10034.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43001 - 2⁶ = 42937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43001.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 43001.

It is not an unprimeable number, because it can be changed into a prime (43003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3065 + ... + 3078.

It is an arithmetic number, because the mean of its divisors is an integer number (12288).

2⁴³⁰⁰¹ is an apocalyptic number.

It is an amenable number.

43001 is a deficient number, since it is larger than the sum of its proper divisors (6151).

43001 is an equidigital number, since it uses as much as digits as its factorization.

43001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 43001 is about 207.3668247334. The cubic root of 43001 is about 35.0342521830.

Adding to 43001 its reverse (10034), we get a palindrome (53035).

The spelling of 43001 in words is "forty-three thousand, one", and thus it is an iban number.