11251871 has 2 divisors, whose sum is σ = 11251872. Its totient is φ = 11251870.

The previous prime is 11251861. The next prime is 11251873. The reversal of 11251871 is 17815211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11251871 is a prime.

Together with 11251873, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11251871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11251873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5625935 + 5625936.

It is an arithmetic number, because the mean of its divisors is an integer number (5625936).

Almost surely, 2^11251871 is an apocalyptic number.

11251871 is a deficient number, since it is larger than the sum of its proper divisors (1).

11251871 is an equidigital number, since it uses as much as digits as its factorization.

11251871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 26.

The square root of 11251871 is about 3354.3808668665. The cubic root of 11251871 is about 224.0826584293.

The spelling of 11251871 in words is "eleven million, two hundred fifty-one thousand, eight hundred seventy-one".