11223257 has 4 divisors (see below), whose sum is σ = 11237940. Its totient is φ = 11208576.

The previous prime is 11223253. The next prime is 11223259. The reversal of 11223257 is 75232211.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7778521 + 3444736 = 2789^2 + 1856^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223257 - 2² = 11223253 is a prime.

It is a super-2 number, since 2×11223257² = 251922995376098, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11223253) 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, 6128 + ... + 7745.

It is an arithmetic number, because the mean of its divisors is an integer number (2809485).

Almost surely, 2^11223257 is an apocalyptic number.

It is an amenable number.

11223257 is a deficient number, since it is larger than the sum of its proper divisors (14683).

11223257 is an equidigital number, since it uses as much as digits as its factorization.

11223257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14682.

The product of its digits is 840, while the sum is 23.

The square root of 11223257 is about 3350.1129831694. The cubic root of 11223257 is about 223.8925465173.

Adding to 11223257 its reverse (75232211), we get a palindrome (86455468).

The spelling of 11223257 in words is "eleven million, two hundred twenty-three thousand, two hundred fifty-seven".