43532643 has 32 divisors (see below), whose sum is σ = 72806400. Its totient is φ = 22476960.

The previous prime is 43532639. The next prime is 43532651. The reversal of 43532643 is 34623534.

It is not a de Polignac number, because 43532643 - 2² = 43532639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43532643.

It is not an unprimeable number, because it can be changed into a prime (43532633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45496 + ... + 46442.

It is an arithmetic number, because the mean of its divisors is an integer number (2275200).

Almost surely, 2^43532643 is an apocalyptic number.

43532643 is a deficient number, since it is larger than the sum of its proper divisors (29273757).

43532643 is a wasteful number, since it uses less digits than its factorization.

43532643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167.

The product of its digits is 25920, while the sum is 30.

The square root of 43532643 is about 6597.9271744996. The cubic root of 43532643 is about 351.7804324340.

It can be divided in two parts, 4353 and 2643, that added together give a palindrome (6996).

The spelling of 43532643 in words is "forty-three million, five hundred thirty-two thousand, six hundred forty-three".