72047111 has 2 divisors, whose sum is σ = 72047112. Its totient is φ = 72047110.

The previous prime is 72047089. The next prime is 72047137. The reversal of 72047111 is 11174027.

It is a weak prime.

It is an emirp because it is prime and its reverse (11174027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72047111 - 2⁶ = 72047047 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 (72047711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36023555 + 36023556.

It is an arithmetic number, because the mean of its divisors is an integer number (36023556).

Almost surely, 2^72047111 is an apocalyptic number.

72047111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72047111 is an equidigital number, since it uses as much as digits as its factorization.

72047111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 72047111 is about 8488.0569625798. The cubic root of 72047111 is about 416.1074807802.

The spelling of 72047111 in words is "seventy-two million, forty-seven thousand, one hundred eleven".