13855211 has 2 divisors, whose sum is σ = 13855212. Its totient is φ = 13855210.

The previous prime is 13855201. The next prime is 13855249. The reversal of 13855211 is 11255831.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (11255831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13855211 - 2²² = 9660907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13855201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6927605 + 6927606.

It is an arithmetic number, because the mean of its divisors is an integer number (6927606).

Almost surely, 2^13855211 is an apocalyptic number.

13855211 is a deficient number, since it is larger than the sum of its proper divisors (1).

13855211 is an equidigital number, since it uses as much as digits as its factorization.

13855211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 26.

The square root of 13855211 is about 3722.2588571995. The cubic root of 13855211 is about 240.1804834528.

The spelling of 13855211 in words is "thirteen million, eight hundred fifty-five thousand, two hundred eleven".