11159851 has 4 divisors (see below), whose sum is σ = 11317104. Its totient is φ = 11002600.

The previous prime is 11159849. The next prime is 11159873. The reversal of 11159851 is 15895111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15895111 = 2351 ⋅6761.

It is a cyclic number.

It is not a de Polignac number, because 11159851 - 2¹ = 11159849 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11159881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78520 + ... + 78661.

It is an arithmetic number, because the mean of its divisors is an integer number (2829276).

Almost surely, 2^11159851 is an apocalyptic number.

11159851 is a deficient number, since it is larger than the sum of its proper divisors (157253).

11159851 is an equidigital number, since it uses as much as digits as its factorization.

11159851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157252.

The product of its digits is 1800, while the sum is 31.

The square root of 11159851 is about 3340.6363166319. The cubic root of 11159851 is about 223.4701216426.

The spelling of 11159851 in words is "eleven million, one hundred fifty-nine thousand, eight hundred fifty-one".