11242555 has 4 divisors (see below), whose sum is σ = 13491072. Its totient is φ = 8994040.

The previous prime is 11242549. The next prime is 11242589. The reversal of 11242555 is 55524211.

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

It is not a de Polignac number, because 11242555 - 2⁵ = 11242523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124251 + ... + 1124260.

It is an arithmetic number, because the mean of its divisors is an integer number (3372768).

Almost surely, 2^11242555 is an apocalyptic number.

11242555 is a deficient number, since it is larger than the sum of its proper divisors (2248517).

11242555 is an equidigital number, since it uses as much as digits as its factorization.

11242555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248516.

The product of its digits is 2000, while the sum is 25.

The square root of 11242555 is about 3352.9919475000. The cubic root of 11242555 is about 224.0207981858.

Adding to 11242555 its reverse (55524211), we get a palindrome (66766766).

The spelling of 11242555 in words is "eleven million, two hundred forty-two thousand, five hundred fifty-five".