72905111 has 2 divisors, whose sum is σ = 72905112. Its totient is φ = 72905110.

The previous prime is 72905099. The next prime is 72905123. The reversal of 72905111 is 11150927.

It is a balanced prime because it is at equal distance from previous prime (72905099) and next prime (72905123).

It is an emirp because it is prime and its reverse (11150927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72905111 - 2²⁶ = 5796247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72905311) 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, 36452555 + 36452556.

It is an arithmetic number, because the mean of its divisors is an integer number (36452556).

Almost surely, 2^72905111 is an apocalyptic number.

72905111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72905111 is an equidigital number, since it uses as much as digits as its factorization.

72905111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 72905111 is about 8538.4489809332. The cubic root of 72905111 is about 417.7527574145.

The spelling of 72905111 in words is "seventy-two million, nine hundred five thousand, one hundred eleven".