1115851 has 12 divisors (see below), whose sum is σ = 1289304. Its totient is φ = 957600.

The previous prime is 1115843. The next prime is 1115857. The reversal of 1115851 is 1585111.

It is not a de Polignac number, because 1115851 - 2³ = 1115843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3831 + ... + 4111.

It is an arithmetic number, because the mean of its divisors is an integer number (107442).

2^1115851 is an apocalyptic number.

1115851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1115851 is a deficient number, since it is larger than the sum of its proper divisors (173453).

1115851 is a wasteful number, since it uses less digits than its factorization.

1115851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 311 counting only the distinct ones).

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

The square root of 1115851 is about 1056.3384874177. The cubic root of 1115851 is about 103.7214873020.

The spelling of 1115851 in words is "one million, one hundred fifteen thousand, eight hundred fifty-one".