11711851 has 2 divisors, whose sum is σ = 11711852. Its totient is φ = 11711850.

The previous prime is 11711849. The next prime is 11711879. The reversal of 11711851 is 15811711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11711851 - 2¹ = 11711849 is a prime.

Together with 11711849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11711551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5855925 + 5855926.

It is an arithmetic number, because the mean of its divisors is an integer number (5855926).

Almost surely, 2^11711851 is an apocalyptic number.

11711851 is a deficient number, since it is larger than the sum of its proper divisors (1).

11711851 is an equidigital number, since it uses as much as digits as its factorization.

11711851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280, while the sum is 25.

The square root of 11711851 is about 3422.2581726106. The cubic root of 11711851 is about 227.0954917898.

The spelling of 11711851 in words is "eleven million, seven hundred eleven thousand, eight hundred fifty-one".