11223550 has 48 divisors (see below), whose sum is σ = 23248512. Its totient is φ = 4003200.

The previous prime is 11223539. The next prime is 11223557. The reversal of 11223550 is 5532211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19872 + ... + 20428.

It is an arithmetic number, because the mean of its divisors is an integer number (484344).

Almost surely, 2^11223550 is an apocalyptic number.

11223550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11223550 is an abundant number, since it is smaller than the sum of its proper divisors (12024962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11223550 is a wasteful number, since it uses less digits than its factorization.

11223550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 11223550 is about 3350.1567127524. The cubic root of 11223550 is about 223.8944948509.

Adding to 11223550 its reverse (5532211), we get a palindrome (16755761).

The spelling of 11223550 in words is "eleven million, two hundred twenty-three thousand, five hundred fifty".