72911 has 2 divisors, whose sum is σ = 72912. Its totient is φ = 72910.

The previous prime is 72907. The next prime is 72923. The reversal of 72911 is 11927.

72911 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is a weak prime.

It is an emirp because it is prime and its reverse (11927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72911 - 2² = 72907 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36455 + 36456.

It is an arithmetic number, because the mean of its divisors is an integer number (36456).

2⁷²⁹¹¹ is an apocalyptic number.

72911 is a deficient number, since it is larger than the sum of its proper divisors (1).

72911 is an equidigital number, since it uses as much as digits as its factorization.

72911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126, while the sum is 20.

The square root of 72911 is about 270.0203696020. The cubic root of 72911 is about 41.7764005276.

Adding to 72911 its product of digits (126), we get a palindrome (73037).

The spelling of 72911 in words is "seventy-two thousand, nine hundred eleven".