11520911 has 2 divisors, whose sum is σ = 11520912. Its totient is φ = 11520910.

The previous prime is 11520889. The next prime is 11520913. The reversal of 11520911 is 11902511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11520911 - 2¹⁴ = 11504527 is a prime.

Together with 11520913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11520913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760455 + 5760456.

It is an arithmetic number, because the mean of its divisors is an integer number (5760456).

Almost surely, 2^11520911 is an apocalyptic number.

11520911 is a deficient number, since it is larger than the sum of its proper divisors (1).

11520911 is an equidigital number, since it uses as much as digits as its factorization.

11520911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 11520911 is about 3394.2467500169. The cubic root of 11520911 is about 225.8546001344.

The spelling of 11520911 in words is "eleven million, five hundred twenty thousand, nine hundred eleven".