11156147 has 2 divisors, whose sum is σ = 11156148. Its totient is φ = 11156146.

The previous prime is 11156137. The next prime is 11156149. The reversal of 11156147 is 74165111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11156147 - 2⁸ = 11155891 is a prime.

Together with 11156149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11156149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5578073 + 5578074.

It is an arithmetic number, because the mean of its divisors is an integer number (5578074).

Almost surely, 2^11156147 is an apocalyptic number.

11156147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11156147 is an equidigital number, since it uses as much as digits as its factorization.

11156147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 26.

The square root of 11156147 is about 3340.0818852238. The cubic root of 11156147 is about 223.4453953589.

The spelling of 11156147 in words is "eleven million, one hundred fifty-six thousand, one hundred forty-seven".