1113851 has 4 divisors (see below), whose sum is σ = 1125432. Its totient is φ = 1102272.

The previous prime is 1113809. The next prime is 1113859. The reversal of 1113851 is 1583111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1583111 = 1193 ⋅1327.

It is a cyclic number.

It is not a de Polignac number, because 1113851 - 2⁶ = 1113787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5645 + ... + 5838.

It is an arithmetic number, because the mean of its divisors is an integer number (281358).

2^1113851 is an apocalyptic number.

1113851 is a deficient number, since it is larger than the sum of its proper divisors (11581).

1113851 is an equidigital number, since it uses as much as digits as its factorization.

1113851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11580.

The product of its digits is 120, while the sum is 20.

The square root of 1113851 is about 1055.3913965918. The cubic root of 1113851 is about 103.6594817011.

Adding to 1113851 its reverse (1583111), we get a palindrome (2696962).

The spelling of 1113851 in words is "one million, one hundred thirteen thousand, eight hundred fifty-one".