13552224 has 144 divisors (see below), whose sum is σ = 42977088. Its totient is φ = 3725568.

The previous prime is 13552211. The next prime is 13552237. The reversal of 13552224 is 42225531.

It is an interprime number because it is at equal distance from previous prime (13552211) and next prime (13552237).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 13552194 and 13552203.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 202239 + ... + 202305.

It is an arithmetic number, because the mean of its divisors is an integer number (298452).

Almost surely, 2^13552224 is an apocalyptic number.

13552224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13552224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21488544).

13552224 is an abundant number, since it is smaller than the sum of its proper divisors (29424864).

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

13552224 is a wasteful number, since it uses less digits than its factorization.

13552224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 122 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 13552224 is about 3681.3345406252. The cubic root of 13552224 is about 238.4168013623.

Adding to 13552224 its reverse (42225531), we get a palindrome (55777755).

The spelling of 13552224 in words is "thirteen million, five hundred fifty-two thousand, two hundred twenty-four".