43574681 has 4 divisors (see below), whose sum is σ = 43595364. Its totient is φ = 43554000.

The previous prime is 43574647. The next prime is 43574683. The reversal of 43574681 is 18647534.

43574681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 225625 + 43349056 = 475^2 + 6584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43574681 is a prime.

It is a super-2 number, since 2×43574681² = 3797505648503522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43574683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6770 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (10898841).

Almost surely, 2^43574681 is an apocalyptic number.

It is an amenable number.

43574681 is a deficient number, since it is larger than the sum of its proper divisors (20683).

43574681 is a wasteful number, since it uses less digits than its factorization.

43574681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20682.

The product of its digits is 80640, while the sum is 38.

The square root of 43574681 is about 6601.1121032747. The cubic root of 43574681 is about 351.8936301573.

The spelling of 43574681 in words is "forty-three million, five hundred seventy-four thousand, six hundred eighty-one".