11521243 has 8 divisors (see below), whose sum is σ = 11934720. Its totient is φ = 11110440.

The previous prime is 11521199. The next prime is 11521249. The reversal of 11521243 is 34212511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11521243 - 2²¹ = 9424091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11521243.

It is not an unprimeable number, because it can be changed into a prime (11521249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12546 + ... + 13432.

It is an arithmetic number, because the mean of its divisors is an integer number (1491840).

Almost surely, 2^11521243 is an apocalyptic number.

11521243 is a deficient number, since it is larger than the sum of its proper divisors (413477).

11521243 is an equidigital number, since it uses as much as digits as its factorization.

11521243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337.

The product of its digits is 240, while the sum is 19.

The square root of 11521243 is about 3394.2956559498. The cubic root of 11521243 is about 225.8567696100.

Adding to 11521243 its reverse (34212511), we get a palindrome (45733754).

The spelling of 11521243 in words is "eleven million, five hundred twenty-one thousand, two hundred forty-three".