72565133 has 8 divisors (see below), whose sum is σ = 74698752. Its totient is φ = 70456176.

The previous prime is 72565111. The next prime is 72565169. The reversal of 72565133 is 33156527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72565133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72565133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72565183) 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, 110 + ... + 12047.

It is an arithmetic number, because the mean of its divisors is an integer number (9337344).

Almost surely, 2^72565133 is an apocalyptic number.

It is an amenable number.

72565133 is a deficient number, since it is larger than the sum of its proper divisors (2133619).

72565133 is a wasteful number, since it uses less digits than its factorization.

72565133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12331.

The product of its digits is 18900, while the sum is 32.

The square root of 72565133 is about 8518.5170657809. The cubic root of 72565133 is about 417.1023773538.

The spelling of 72565133 in words is "seventy-two million, five hundred sixty-five thousand, one hundred thirty-three".