13550056 has 32 divisors (see below), whose sum is σ = 27626760. Its totient is φ = 6193152.

The previous prime is 13550039. The next prime is 13550057. The reversal of 13550056 is 65005531.

13550056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7128900 + 6421156 = 2670^2 + 2534^2 .

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13550056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11176 + ... + 12328.

Almost surely, 2^13550056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13550056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13813380).

13550056 is an abundant number, since it is smaller than the sum of its proper divisors (14076704).

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

13550056 is a wasteful number, since it uses less digits than its factorization.

13550056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 13550056 is about 3681.0400704149. The cubic root of 13550056 is about 238.4040872083.

Adding to 13550056 its reverse (65005531), we get a palindrome (78555587).

The spelling of 13550056 in words is "thirteen million, five hundred fifty thousand, fifty-six".