43278201 has 12 divisors (see below), whose sum is σ = 64529920. Its totient is φ = 27921240.

The previous prime is 43278133. The next prime is 43278223. The reversal of 43278201 is 10287234.

It is not a de Polignac number, because 43278201 - 2¹¹ = 43276153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43278241) 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, 77281 + ... + 77838.

Almost surely, 2^43278201 is an apocalyptic number.

It is an amenable number.

43278201 is a deficient number, since it is larger than the sum of its proper divisors (21251719).

43278201 is a wasteful number, since it uses less digits than its factorization.

43278201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155156 (or 155153 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 43278201 is about 6578.6169519132. The cubic root of 43278201 is about 351.0937242105.

The spelling of 43278201 in words is "forty-three million, two hundred seventy-eight thousand, two hundred one".