43072441 has 4 divisors (see below), whose sum is σ = 45606132. Its totient is φ = 40538752.

The previous prime is 43072439. The next prime is 43072481. The reversal of 43072441 is 14427034.

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 21123216 + 21949225 = 4596^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 43072441 - 2¹ = 43072439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43072481) 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, 1266820 + ... + 1266853.

It is an arithmetic number, because the mean of its divisors is an integer number (11401533).

Almost surely, 2^43072441 is an apocalyptic number.

It is an amenable number.

43072441 is a deficient number, since it is larger than the sum of its proper divisors (2533691).

43072441 is a wasteful number, since it uses less digits than its factorization.

43072441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533690.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 43072441 is about 6562.9597743701. The cubic root of 43072441 is about 350.5364318328.

Adding to 43072441 its reverse (14427034), we get a palindrome (57499475).

The spelling of 43072441 in words is "forty-three million, seventy-two thousand, four hundred forty-one".