11440145 has 4 divisors (see below), whose sum is σ = 13728180. Its totient is φ = 9152112.

The previous prime is 11440127. The next prime is 11440151. The reversal of 11440145 is 54104411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54104411 = 257 ⋅210523.

It can be written as a sum of positive squares in 2 ways, for example, as 3139984 + 8300161 = 1772^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 11440145 - 2¹⁴ = 11423761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144010 + ... + 1144019.

It is an arithmetic number, because the mean of its divisors is an integer number (3432045).

Almost surely, 2^11440145 is an apocalyptic number.

It is an amenable number.

11440145 is a deficient number, since it is larger than the sum of its proper divisors (2288035).

11440145 is an equidigital number, since it uses as much as digits as its factorization.

11440145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288034.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 11440145 is about 3382.3283400640. The cubic root of 11440145 is about 225.3255862463.

Adding to 11440145 its reverse (54104411), we get a palindrome (65544556).

The spelling of 11440145 in words is "eleven million, four hundred forty thousand, one hundred forty-five".