72851599 has 2 divisors, whose sum is σ = 72851600. Its totient is φ = 72851598.

The previous prime is 72851593. The next prime is 72851617. The reversal of 72851599 is 99515827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72851599 - 2⁹ = 72851087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72851593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36425799 + 36425800.

It is an arithmetic number, because the mean of its divisors is an integer number (36425800).

Almost surely, 2^72851599 is an apocalyptic number.

72851599 is a deficient number, since it is larger than the sum of its proper divisors (1).

72851599 is an equidigital number, since it uses as much as digits as its factorization.

72851599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 46.

The square root of 72851599 is about 8535.3148155179. The cubic root of 72851599 is about 417.6505228939.

The spelling of 72851599 in words is "seventy-two million, eight hundred fifty-one thousand, five hundred ninety-nine".