11716511 has 4 divisors (see below), whose sum is σ = 11989032. Its totient is φ = 11443992.

The previous prime is 11716501. The next prime is 11716541. The reversal of 11716511 is 11561711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11716511 - 2¹⁴ = 11700127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11716501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136196 + ... + 136281.

It is an arithmetic number, because the mean of its divisors is an integer number (2997258).

Almost surely, 2^11716511 is an apocalyptic number.

11716511 is a deficient number, since it is larger than the sum of its proper divisors (272521).

11716511 is an equidigital number, since it uses as much as digits as its factorization.

11716511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272520.

The product of its digits is 210, while the sum is 23.

The square root of 11716511 is about 3422.9389419036. The cubic root of 11716511 is about 227.1256072875.

It can be divided in two parts, 117165 and 11, that multiplied together give a triangular number (1288815 = T₁₆₀₅).

The spelling of 11716511 in words is "eleven million, seven hundred sixteen thousand, five hundred eleven".