11157149 has 4 divisors (see below), whose sum is σ = 11167164. Its totient is φ = 11147136.

The previous prime is 11157127. The next prime is 11157163. The reversal of 11157149 is 94175111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94175111 = 1217 ⋅77383.

It can be written as a sum of positive squares in 2 ways, for example, as 5784025 + 5373124 = 2405^2 + 2318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11157149 is a prime.

It is a Duffinian number.

It is a congruent 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, 3092 + ... + 5645.

It is an arithmetic number, because the mean of its divisors is an integer number (2791791).

Almost surely, 2^11157149 is an apocalyptic number.

It is an amenable number.

11157149 is a deficient number, since it is larger than the sum of its proper divisors (10015).

11157149 is an equidigital number, since it uses as much as digits as its factorization.

11157149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10014.

The product of its digits is 1260, while the sum is 29.

The square root of 11157149 is about 3340.2318781785. The cubic root of 11157149 is about 223.4520848125.

The spelling of 11157149 in words is "eleven million, one hundred fifty-seven thousand, one hundred forty-nine".