72385771 has 2 divisors, whose sum is σ = 72385772. Its totient is φ = 72385770.

The previous prime is 72385739. The next prime is 72385783. The reversal of 72385771 is 17758327.

It is a strong prime.

It is an emirp because it is prime and its reverse (17758327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72385771 - 2⁵ = 72385739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72385721) 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 as a sum of consecutive naturals, namely, 36192885 + 36192886.

It is an arithmetic number, because the mean of its divisors is an integer number (36192886).

Almost surely, 2^72385771 is an apocalyptic number.

72385771 is a deficient number, since it is larger than the sum of its proper divisors (1).

72385771 is an equidigital number, since it uses as much as digits as its factorization.

72385771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The square root of 72385771 is about 8507.9827808947. The cubic root of 72385771 is about 416.7584378836.

The spelling of 72385771 in words is "seventy-two million, three hundred eighty-five thousand, seven hundred seventy-one".