11215289 has 2 divisors, whose sum is σ = 11215290. Its totient is φ = 11215288.

The previous prime is 11215279. The next prime is 11215297. The reversal of 11215289 is 98251211.

11215289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9610000 + 1605289 = 3100^2 + 1267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11215289 is a prime.

It is a Chen prime.

It is equal to p₇₃₉₈₀₂ and since 11215289 and 739802 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11215229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607644 + 5607645.

It is an arithmetic number, because the mean of its divisors is an integer number (5607645).

Almost surely, 2^11215289 is an apocalyptic number.

It is an amenable number.

11215289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11215289 is an equidigital number, since it uses as much as digits as its factorization.

11215289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 29.

The square root of 11215289 is about 3348.9235583990. The cubic root of 11215289 is about 223.8395494786.

The spelling of 11215289 in words is "eleven million, two hundred fifteen thousand, two hundred eighty-nine".