11445 has 16 divisors (see below), whose sum is σ = 21120. Its totient is φ = 5184.

The previous prime is 11443. The next prime is 11447. The reversal of 11445 is 54411.

11445 = T₆ + T₇ + ... + T₄₀.

It is an interprime number because it is at equal distance from previous prime (11443) and next prime (11447).

It is not a de Polignac number, because 11445 - 2¹ = 11443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 10.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51 + ... + 159.

It is an arithmetic number, because the mean of its divisors is an integer number (1320).

2¹¹⁴⁴⁵ is an apocalyptic number.

11445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11445 is a deficient number, since it is larger than the sum of its proper divisors (9675).

11445 is a wasteful number, since it uses less digits than its factorization.

11445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124.

The product of its digits is 80, while the sum is 15.

The square root of 11445 is about 106.9813067783. The cubic root of 11445 is about 22.5357456501.

Adding to 11445 its reverse (54411), we get a palindrome (65856).

The spelling of 11445 in words is "eleven thousand, four hundred forty-five".