43545541 has 8 divisors (see below), whose sum is σ = 47986400. Its totient is φ = 39260592.

The previous prime is 43545533. The next prime is 43545553. The reversal of 43545541 is 14554534.

It is a happy number.

43545541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43545541 - 2³ = 43545533 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 (43545581) 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 7 ways as a sum of consecutive naturals, for example, 38391 + ... + 39508.

It is an arithmetic number, because the mean of its divisors is an integer number (5998300).

Almost surely, 2^43545541 is an apocalyptic number.

It is an amenable number.

43545541 is a deficient number, since it is larger than the sum of its proper divisors (4440859).

43545541 is a wasteful number, since it uses less digits than its factorization.

43545541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77955.

The product of its digits is 24000, while the sum is 31.

The square root of 43545541 is about 6598.9045302989. The cubic root of 43545541 is about 351.8151712390.

The spelling of 43545541 in words is "forty-three million, five hundred forty-five thousand, five hundred forty-one".