11521249 has 2 divisors, whose sum is σ = 11521250. Its totient is φ = 11521248.

The previous prime is 11521199. The next prime is 11521259. The reversal of 11521249 is 94212511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7290000 + 4231249 = 2700^2 + 2057^2 .

It is a cyclic number.

It is not a de Polignac number, because 11521249 - 2¹¹ = 11519201 is a prime.

It is not a weakly prime, because it can be changed into another prime (11521259) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760624 + 5760625.

It is an arithmetic number, because the mean of its divisors is an integer number (5760625).

Almost surely, 2^11521249 is an apocalyptic number.

It is an amenable number.

11521249 is a deficient number, since it is larger than the sum of its proper divisors (1).

11521249 is an equidigital number, since it uses as much as digits as its factorization.

11521249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 25.

The square root of 11521249 is about 3394.2965397855. The cubic root of 11521249 is about 225.8568088170.

It can be divided in two parts, 1152 and 1249, that added together give a 4-th power (2401 = 7⁴).

The spelling of 11521249 in words is "eleven million, five hundred twenty-one thousand, two hundred forty-nine".