72856211 has 2 divisors, whose sum is σ = 72856212. Its totient is φ = 72856210.

The previous prime is 72856187. The next prime is 72856213. The reversal of 72856211 is 11265827.

It is a strong prime.

It is an emirp because it is prime and its reverse (11265827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72856211 - 2²² = 68661907 is a prime.

Together with 72856213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72856213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36428105 + 36428106.

It is an arithmetic number, because the mean of its divisors is an integer number (36428106).

Almost surely, 2^72856211 is an apocalyptic number.

72856211 is a deficient number, since it is larger than the sum of its proper divisors (1).

72856211 is an equidigital number, since it uses as much as digits as its factorization.

72856211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 72856211 is about 8535.5849828820. The cubic root of 72856211 is about 417.6593360776.

The spelling of 72856211 in words is "seventy-two million, eight hundred fifty-six thousand, two hundred eleven".