11163541 has 4 divisors (see below), whose sum is σ = 11173932. Its totient is φ = 11153152.

The previous prime is 11163499. The next prime is 11163547. The reversal of 11163541 is 14536111.

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: 14536111 = 137 ⋅106103.

It can be written as a sum of positive squares in 2 ways, for example, as 1615441 + 9548100 = 1271^2 + 3090^2 .

It is a cyclic number.

It is not a de Polignac number, because 11163541 - 2⁷ = 11163413 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 (11163547) 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, 3370 + ... + 5803.

It is an arithmetic number, because the mean of its divisors is an integer number (2793483).

Almost surely, 2^11163541 is an apocalyptic number.

It is an amenable number.

11163541 is a deficient number, since it is larger than the sum of its proper divisors (10391).

11163541 is an equidigital number, since it uses as much as digits as its factorization.

11163541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10390.

The product of its digits is 360, while the sum is 22.

The square root of 11163541 is about 3341.1885609765. The cubic root of 11163541 is about 223.4947490287.

Adding to 11163541 its reverse (14536111), we get a palindrome (25699652).

The spelling of 11163541 in words is "eleven million, one hundred sixty-three thousand, five hundred forty-one".