43506113 has 16 divisors (see below), whose sum is σ = 51692544. Its totient is φ = 35830080.

The previous prime is 43506103. The next prime is 43506121. The reversal of 43506113 is 31160534.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 43506113 - 2⁴ = 43506097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43506103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33431 + ... + 34707.

It is an arithmetic number, because the mean of its divisors is an integer number (3230784).

Almost surely, 2^43506113 is an apocalyptic number.

It is an amenable number.

43506113 is a deficient number, since it is larger than the sum of its proper divisors (8186431).

43506113 is a wasteful number, since it uses less digits than its factorization.

43506113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 43506113 is about 6595.9163881905. The cubic root of 43506113 is about 351.7089563282.

Adding to 43506113 its reverse (31160534), we get a palindrome (74666647).

The spelling of 43506113 in words is "forty-three million, five hundred six thousand, one hundred thirteen".