43545241 has 4 divisors (see below), whose sum is σ = 43976484. Its totient is φ = 43114000.

The previous prime is 43545221. The next prime is 43545247. The reversal of 43545241 is 14254534.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42302016 + 1243225 = 6504^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 43545241 - 2⁵ = 43545209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43545247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215470 + ... + 215671.

It is an arithmetic number, because the mean of its divisors is an integer number (10994121).

Almost surely, 2^43545241 is an apocalyptic number.

It is an amenable number.

43545241 is a deficient number, since it is larger than the sum of its proper divisors (431243).

43545241 is a wasteful number, since it uses less digits than its factorization.

43545241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431242.

The product of its digits is 9600, while the sum is 28.

The square root of 43545241 is about 6598.8817992142. The cubic root of 43545241 is about 351.8143633125.

Adding to 43545241 its reverse (14254534), we get a palindrome (57799775).

The spelling of 43545241 in words is "forty-three million, five hundred forty-five thousand, two hundred forty-one".