72565443 has 8 divisors (see below), whose sum is σ = 107504400. Its totient is φ = 48376944.

The previous prime is 72565433. The next prime is 72565459. The reversal of 72565443 is 34456527.

It is not a de Polignac number, because 72565443 - 2⁶ = 72565379 is a prime.

It is a super-3 number, since 3×72565443³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72565398 and 72565407.

It is not an unprimeable number, because it can be changed into a prime (72565433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343778 + ... + 1343831.

It is an arithmetic number, because the mean of its divisors is an integer number (13438050).

Almost surely, 2^72565443 is an apocalyptic number.

72565443 is a deficient number, since it is larger than the sum of its proper divisors (34938957).

72565443 is a wasteful number, since it uses less digits than its factorization.

72565443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687618 (or 2687612 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 72565443 is about 8518.5352614167. The cubic root of 72565443 is about 417.1029713101.

The spelling of 72565443 in words is "seventy-two million, five hundred sixty-five thousand, four hundred forty-three".