11545213 has 4 divisors (see below), whose sum is σ = 11556028. Its totient is φ = 11534400.

The previous prime is 11545187. The next prime is 11545223. The reversal of 11545213 is 31254511.

It is a happy number.

11545213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 31254511 = 1087 ⋅28753.

It can be written as a sum of positive squares in 2 ways, for example, as 5654884 + 5890329 = 2378^2 + 2427^2 .

It is a cyclic number.

It is not a de Polignac number, because 11545213 - 2⁵ = 11545181 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 (11545223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3606 + ... + 6007.

It is an arithmetic number, because the mean of its divisors is an integer number (2889007).

Almost surely, 2^11545213 is an apocalyptic number.

It is an amenable number.

11545213 is a deficient number, since it is larger than the sum of its proper divisors (10815).

11545213 is an equidigital number, since it uses as much as digits as its factorization.

11545213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10814.

The product of its digits is 600, while the sum is 22.

The square root of 11545213 is about 3397.8247453334. The cubic root of 11545213 is about 226.0132931330.

Adding to 11545213 its reverse (31254511), we get a palindrome (42799724).

The spelling of 11545213 in words is "eleven million, five hundred forty-five thousand, two hundred thirteen".