43505745 has 8 divisors (see below), whose sum is σ = 69609216. Its totient is φ = 23203056.

The previous prime is 43505717. The next prime is 43505767. The reversal of 43505745 is 54750534.

43505745 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 not a de Polignac number, because 43505745 - 2⁶ = 43505681 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 1450177 + ... + 1450206.

It is an arithmetic number, because the mean of its divisors is an integer number (8701152).

Almost surely, 2^43505745 is an apocalyptic number.

It is an amenable number.

43505745 is a deficient number, since it is larger than the sum of its proper divisors (26103471).

43505745 is a wasteful number, since it uses less digits than its factorization.

43505745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900391.

The product of its (nonzero) digits is 42000, while the sum is 33.

The square root of 43505745 is about 6595.8884920835. Note that the first 3 decimals coincide. The cubic root of 43505745 is about 351.7079646725.

The spelling of 43505745 in words is "forty-three million, five hundred five thousand, seven hundred forty-five".