43274561 has 12 divisors (see below), whose sum is σ = 48050772. Its totient is φ = 38940000.

The previous prime is 43274521. The next prime is 43274579. The reversal of 43274561 is 16547234.

It can be written as a sum of positive squares in 2 ways, for example, as 32092225 + 11182336 = 5665^2 + 3344^2 .

It is a de Polignac number, because none of the positive numbers 2^k-43274561 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (43274521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10451 + ... + 13991.

It is an arithmetic number, because the mean of its divisors is an integer number (4004231).

Almost surely, 2^43274561 is an apocalyptic number.

It is an amenable number.

43274561 is a deficient number, since it is larger than the sum of its proper divisors (4776211).

43274561 is a wasteful number, since it uses less digits than its factorization.

43274561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664 (or 3653 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 43274561 is about 6578.3402922014. The cubic root of 43274561 is about 351.0838807870.

It can be divided in two parts, 4327 and 4561, that added together give a palindrome (8888).

The spelling of 43274561 in words is "forty-three million, two hundred seventy-four thousand, five hundred sixty-one".