11157187 has 4 divisors (see below), whose sum is σ = 11225800. Its totient is φ = 11088576.

The previous prime is 11157169. The next prime is 11157191. The reversal of 11157187 is 78175111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11157187 - 2¹¹ = 11155139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11157127) 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 3 ways as a sum of consecutive naturals, for example, 34062 + ... + 34387.

It is an arithmetic number, because the mean of its divisors is an integer number (2806450).

Almost surely, 2^11157187 is an apocalyptic number.

11157187 is a deficient number, since it is larger than the sum of its proper divisors (68613).

11157187 is an equidigital number, since it uses as much as digits as its factorization.

11157187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68612.

The product of its digits is 1960, while the sum is 31.

The square root of 11157187 is about 3340.2375664015. The cubic root of 11157187 is about 223.4523384965.

The spelling of 11157187 in words is "eleven million, one hundred fifty-seven thousand, one hundred eighty-seven".