11217853 has 2 divisors, whose sum is σ = 11217854. Its totient is φ = 11217852.

The previous prime is 11217799. The next prime is 11217881. The reversal of 11217853 is 35871211.

It is an a-pointer prime, because the next prime (11217881) can be obtained adding 11217853 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8538084 + 2679769 = 2922^2 + 1637^2 .

It is a cyclic number.

It is not a de Polignac number, because 11217853 - 2²¹ = 9120701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11217893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608926 + 5608927.

It is an arithmetic number, because the mean of its divisors is an integer number (5608927).

Almost surely, 2^11217853 is an apocalyptic number.

It is an amenable number.

11217853 is a deficient number, since it is larger than the sum of its proper divisors (1).

11217853 is an equidigital number, since it uses as much as digits as its factorization.

11217853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 28.

The square root of 11217853 is about 3349.3063460962. The cubic root of 11217853 is about 223.8566059829.

The spelling of 11217853 in words is "eleven million, two hundred seventeen thousand, eight hundred fifty-three".