11455111 has 2 divisors, whose sum is σ = 11455112. Its totient is φ = 11455110.

The previous prime is 11455109. The next prime is 11455121. The reversal of 11455111 is 11155411.

It is a weak prime.

It is an emirp because it is prime and its reverse (11155411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11455111 - 2¹ = 11455109 is a prime.

Together with 11455109, 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 (11455121) 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, 5727555 + 5727556.

It is an arithmetic number, because the mean of its divisors is an integer number (5727556).

Almost surely, 2^11455111 is an apocalyptic number.

11455111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11455111 is an equidigital number, since it uses as much as digits as its factorization.

11455111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100, while the sum is 19.

The square root of 11455111 is about 3384.5399982863. The cubic root of 11455111 is about 225.4238004233.

It can be divided in two parts, 114 and 55111, that added together give a square (55225 = 235²).

The spelling of 11455111 in words is "eleven million, four hundred fifty-five thousand, one hundred eleven".