43745543 has 8 divisors (see below), whose sum is σ = 47636400. Its totient is φ = 40013568.

The previous prime is 43745521. The next prime is 43745549. The reversal of 43745543 is 34554734.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43745543 - 2¹² = 43741447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43745549) 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 7 ways as a sum of consecutive naturals, for example, 39146 + ... + 40247.

It is an arithmetic number, because the mean of its divisors is an integer number (5954550).

Almost surely, 2^43745543 is an apocalyptic number.

43745543 is a deficient number, since it is larger than the sum of its proper divisors (3890857).

43745543 is a wasteful number, since it uses less digits than its factorization.

43745543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79441.

The product of its digits is 100800, while the sum is 35.

The square root of 43745543 is about 6614.0413515490. The cubic root of 43745543 is about 352.3529705548.

The spelling of 43745543 in words is "forty-three million, seven hundred forty-five thousand, five hundred forty-three".