1111855 has 8 divisors (see below), whose sum is σ = 1357200. Its totient is φ = 874176.

The previous prime is 1111853. The next prime is 1111867. The reversal of 1111855 is 5581111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111855 - 2¹ = 1111853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111853) 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 in 7 ways as a sum of consecutive naturals, for example, 1590 + ... + 2179.

It is an arithmetic number, because the mean of its divisors is an integer number (169650).

2^1111855 is an apocalyptic number.

1111855 is a deficient number, since it is larger than the sum of its proper divisors (245345).

1111855 is an equidigital number, since it uses as much as digits as its factorization.

1111855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833.

The product of its digits is 200, while the sum is 22.

The square root of 1111855 is about 1054.4453518319. The cubic root of 1111855 is about 103.5975260661.

Adding to 1111855 its reverse (5581111), we get a palindrome (6692966).

The spelling of 1111855 in words is "one million, one hundred eleven thousand, eight hundred fifty-five".