43545113 has 4 divisors (see below), whose sum is σ = 43563300. Its totient is φ = 43526928.

The previous prime is 43545097. The next prime is 43545121. The reversal of 43545113 is 31154534.

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 6615184 + 36929929 = 2572^2 + 6077^2 .

It is a cyclic number.

It is not a de Polignac number, because 43545113 - 2⁴ = 43545097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43545193) 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 3 ways as a sum of consecutive naturals, for example, 4838 + ... + 10511.

It is an arithmetic number, because the mean of its divisors is an integer number (10890825).

Almost surely, 2^43545113 is an apocalyptic number.

It is an amenable number.

43545113 is a deficient number, since it is larger than the sum of its proper divisors (18187).

43545113 is a wasteful number, since it uses less digits than its factorization.

43545113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18186.

The product of its digits is 3600, while the sum is 26.

The square root of 43545113 is about 6598.8721005942. The cubic root of 43545113 is about 351.8140185960.

Adding to 43545113 its reverse (31154534), we get a palindrome (74699647).

The spelling of 43545113 in words is "forty-three million, five hundred forty-five thousand, one hundred thirteen".