11145 has 8 divisors (see below), whose sum is σ = 17856. Its totient is φ = 5936.

The previous prime is 11131. The next prime is 11149. The reversal of 11145 is 54111.

It is a happy number.

11145 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11145 - 2⁵ = 11113 is a prime.

It is a super-2 number, since 2×11145² = 248422050, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 6 and base 10.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 11145.

It is not an unprimeable number, because it can be changed into a prime (11149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357 + ... + 386.

It is an arithmetic number, because the mean of its divisors is an integer number (2232).

2¹¹¹⁴⁵ is an apocalyptic number.

11145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11145 is a deficient number, since it is larger than the sum of its proper divisors (6711).

11145 is an equidigital number, since it uses as much as digits as its factorization.

11145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751.

The product of its digits is 20, while the sum is 12.

The square root of 11145 is about 105.5698820687. The cubic root of 11145 is about 22.3370949828.

Adding to 11145 its reverse (54111), we get a palindrome (65256).

The spelling of 11145 in words is "eleven thousand, one hundred forty-five".