11550243 has 4 divisors (see below), whose sum is σ = 15400328. Its totient is φ = 7700160.

The previous prime is 11550241. The next prime is 11550247. The reversal of 11550243 is 34205511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11550243 - 2¹ = 11550241 is a prime.

It is a super-2 number, since 2×11550243² = 266816226718098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11550241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925038 + ... + 1925043.

It is an arithmetic number, because the mean of its divisors is an integer number (3850082).

Almost surely, 2^11550243 is an apocalyptic number.

11550243 is a deficient number, since it is larger than the sum of its proper divisors (3850085).

11550243 is an equidigital number, since it uses as much as digits as its factorization.

11550243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850084.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 11550243 is about 3398.5648441658. The cubic root of 11550243 is about 226.0461114046.

Adding to 11550243 its reverse (34205511), we get a palindrome (45755754).

The spelling of 11550243 in words is "eleven million, five hundred fifty thousand, two hundred forty-three".