11157115 has 4 divisors (see below), whose sum is σ = 13388544. Its totient is φ = 8925688.

The previous prime is 11157089. The next prime is 11157119. The reversal of 11157115 is 51175111.

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 11157115 - 2⁷ = 11156987 is a prime.

It is a Smith number, since the sum of its digits (22) 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 (11157119) 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, 1115707 + ... + 1115716.

It is an arithmetic number, because the mean of its divisors is an integer number (3347136).

Almost surely, 2^11157115 is an apocalyptic number.

11157115 is a deficient number, since it is larger than the sum of its proper divisors (2231429).

11157115 is an equidigital number, since it uses as much as digits as its factorization.

11157115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231428.

The product of its digits is 175, while the sum is 22.

The square root of 11157115 is about 3340.2267887076. The cubic root of 11157115 is about 223.4518578317.

The spelling of 11157115 in words is "eleven million, one hundred fifty-seven thousand, one hundred fifteen".