43545243 has 16 divisors (see below), whose sum is σ = 67347200. Its totient is φ = 24510816.

The previous prime is 43545221. The next prime is 43545247. The reversal of 43545243 is 34254534.

43545243 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 43545243 - 2⁶ = 43545179 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 43545243.

It is not an unprimeable number, because it can be changed into a prime (43545247) 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, 14068 + ... + 16881.

It is an arithmetic number, because the mean of its divisors is an integer number (4209200).

Almost surely, 2^43545243 is an apocalyptic number.

43545243 is a deficient number, since it is larger than the sum of its proper divisors (23801957).

43545243 is a wasteful number, since it uses less digits than its factorization.

43545243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31026.

The product of its digits is 28800, while the sum is 30.

The square root of 43545243 is about 6598.8819507550. The cubic root of 43545243 is about 351.8143686987.

Adding to 43545243 its reverse (34254534), we get a palindrome (77799777).

The spelling of 43545243 in words is "forty-three million, five hundred forty-five thousand, two hundred forty-three".