13551224 has 16 divisors (see below), whose sum is σ = 25449000. Its totient is φ = 6764832.

The previous prime is 13551217. The next prime is 13551233. The reversal of 13551224 is 42215531.

It is a self number, because there is not a number n which added to its sum of digits gives 13551224.

It is a congruent number.

It is an unprimeable number.

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, 7127 + ... + 8825.

Almost surely, 2^13551224 is an apocalyptic number.

It is an amenable number.

13551224 is a deficient number, since it is larger than the sum of its proper divisors (11897776).

13551224 is a wasteful number, since it uses less digits than its factorization.

13551224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702 (or 2698 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 13551224 is about 3681.1987178092. The cubic root of 13551224 is about 238.4109370686.

Adding to 13551224 its reverse (42215531), we get a palindrome (55766755).

The spelling of 13551224 in words is "thirteen million, five hundred fifty-one thousand, two hundred twenty-four".