11223541 has 4 divisors (see below), whose sum is σ = 12826912. Its totient is φ = 9620172.

The previous prime is 11223539. The next prime is 11223557. The reversal of 11223541 is 14532211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14532211 = 31 ⋅468781.

It is a cyclic number.

It is not a de Polignac number, because 11223541 - 2¹ = 11223539 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223521) by changing a digit.

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, 801675 + ... + 801688.

It is an arithmetic number, because the mean of its divisors is an integer number (3206728).

Almost surely, 2^11223541 is an apocalyptic number.

It is an amenable number.

11223541 is a deficient number, since it is larger than the sum of its proper divisors (1603371).

11223541 is an equidigital number, since it uses as much as digits as its factorization.

11223541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603370.

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

The square root of 11223541 is about 3350.1553695314. The cubic root of 11223541 is about 223.8944350050.

Adding to 11223541 its reverse (14532211), we get a palindrome (25755752).

It can be divided in two parts, 112 and 23541, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 11223541 in words is "eleven million, two hundred twenty-three thousand, five hundred forty-one".