11156671 has 2 divisors, whose sum is σ = 11156672. Its totient is φ = 11156670.

The previous prime is 11156669. The next prime is 11156681. The reversal of 11156671 is 17665111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11156671 - 2¹ = 11156669 is a prime.

Together with 11156669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11156681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5578335 + 5578336.

It is an arithmetic number, because the mean of its divisors is an integer number (5578336).

Almost surely, 2^11156671 is an apocalyptic number.

11156671 is a deficient number, since it is larger than the sum of its proper divisors (1).

11156671 is an equidigital number, since it uses as much as digits as its factorization.

11156671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 28.

The square root of 11156671 is about 3340.1603254934. The cubic root of 11156671 is about 223.4488936860.

The spelling of 11156671 in words is "eleven million, one hundred fifty-six thousand, six hundred seventy-one".