11578213 has 2 divisors, whose sum is σ = 11578214. Its totient is φ = 11578212.

The previous prime is 11578199. The next prime is 11578243. The reversal of 11578213 is 31287511.

11578213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6640929 + 4937284 = 2577^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 11578213 - 2⁵ = 11578181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11578243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5789106 + 5789107.

It is an arithmetic number, because the mean of its divisors is an integer number (5789107).

Almost surely, 2^11578213 is an apocalyptic number.

It is an amenable number.

11578213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11578213 is an equidigital number, since it uses as much as digits as its factorization.

11578213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 28.

The square root of 11578213 is about 3402.6773282226. The cubic root of 11578213 is about 226.2284282924.

The spelling of 11578213 in words is "eleven million, five hundred seventy-eight thousand, two hundred thirteen".