11551223 has 6 divisors (see below), whose sum is σ = 11664744. Its totient is φ = 11438396.

The previous prime is 11551213. The next prime is 11551229. The reversal of 11551223 is 32215511.

It is a happy number.

11551223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11551223 - 2⁴ = 11551207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11551195 and 11551204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43790 + ... + 44052.

It is an arithmetic number, because the mean of its divisors is an integer number (1944124).

Almost surely, 2^11551223 is an apocalyptic number.

11551223 is a deficient number, since it is larger than the sum of its proper divisors (113521).

11551223 is an frugal number, since it uses more digits than its factorization.

11551223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 430 counting only the distinct ones).

The product of its digits is 300, while the sum is 20.

The square root of 11551223 is about 3398.7090196132. The cubic root of 11551223 is about 226.0525043126.

Adding to 11551223 its reverse (32215511), we get a palindrome (43766734).

The spelling of 11551223 in words is "eleven million, five hundred fifty-one thousand, two hundred twenty-three".