72945211 has 2 divisors, whose sum is σ = 72945212. Its totient is φ = 72945210.

The previous prime is 72945193. The next prime is 72945221. The reversal of 72945211 is 11254927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72945211 - 2¹¹ = 72943163 is a prime.

It is not a weakly prime, because it can be changed into another prime (72945221) 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, 36472605 + 36472606.

It is an arithmetic number, because the mean of its divisors is an integer number (36472606).

Almost surely, 2^72945211 is an apocalyptic number.

72945211 is a deficient number, since it is larger than the sum of its proper divisors (1).

72945211 is an equidigital number, since it uses as much as digits as its factorization.

72945211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 72945211 is about 8540.7968597784. The cubic root of 72945211 is about 417.8293355626.

The spelling of 72945211 in words is "seventy-two million, nine hundred forty-five thousand, two hundred eleven".