43145643 has 16 divisors (see below), whose sum is σ = 61070976. Its totient is φ = 27000960.

The previous prime is 43145629. The next prime is 43145651. The reversal of 43145643 is 34654134.

43145643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43145643 - 2⁹ = 43145131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43145643.

It is not an unprimeable number, because it can be changed into a prime (43145603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24180 + ... + 25902.

It is an arithmetic number, because the mean of its divisors is an integer number (3816936).

Almost surely, 2^43145643 is an apocalyptic number.

43145643 is a deficient number, since it is larger than the sum of its proper divisors (17925333).

43145643 is a wasteful number, since it uses less digits than its factorization.

43145643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234.

The product of its digits is 17280, while the sum is 30.

The square root of 43145643 is about 6568.5343113970. The cubic root of 43145643 is about 350.7348993800.

Adding to 43145643 its reverse (34654134), we get a palindrome (77799777).

The spelling of 43145643 in words is "forty-three million, one hundred forty-five thousand, six hundred forty-three".