11400145 has 4 divisors (see below), whose sum is σ = 13680180. Its totient is φ = 9120112.

The previous prime is 11400131. The next prime is 11400199. The reversal of 11400145 is 54100411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54100411 = 617 ⋅87683.

It can be written as a sum of positive squares in 2 ways, for example, as 8116801 + 3283344 = 2849^2 + 1812^2 .

It is a cyclic number.

It is not a de Polignac number, because 11400145 - 2⁷ = 11400017 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, 1140010 + ... + 1140019.

It is an arithmetic number, because the mean of its divisors is an integer number (3420045).

Almost surely, 2^11400145 is an apocalyptic number.

It is an amenable number.

11400145 is a deficient number, since it is larger than the sum of its proper divisors (2280035).

11400145 is an equidigital number, since it uses as much as digits as its factorization.

11400145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280034.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 11400145 is about 3376.4100758054. The cubic root of 11400145 is about 225.0626656727.

Adding to 11400145 its reverse (54100411), we get a palindrome (65500556).

The spelling of 11400145 in words is "eleven million, four hundred thousand, one hundred forty-five".