43041091 has 4 divisors (see below), whose sum is σ = 43196752. Its totient is φ = 42885432.

The previous prime is 43041083. The next prime is 43041121. The reversal of 43041091 is 19014034.

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

It is a cyclic number.

It is not a de Polignac number, because 43041091 - 2³ = 43041083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43041991) 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, 77415 + ... + 77968.

It is an arithmetic number, because the mean of its divisors is an integer number (10799188).

Almost surely, 2^43041091 is an apocalyptic number.

43041091 is a deficient number, since it is larger than the sum of its proper divisors (155661).

43041091 is a wasteful number, since it uses less digits than its factorization.

43041091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155660.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 43041091 is about 6560.5709355208. The cubic root of 43041091 is about 350.4513659599.

The spelling of 43041091 in words is "forty-three million, forty-one thousand, ninety-one".