13556 has 6 divisors (see below), whose sum is σ = 23730.
Its totient is φ = 6776.
The previous prime is 13553. The next prime is 13567. The reversal of 13556 is 65531.
It can be divided in two parts, 135 and 56, that added together give a palindrome (191).
13556 is nontrivially palindromic in base 3.
It can be written as a sum of positive squares in only one way, i.e., 13456 + 100 = 116^2 + 10^2
It is a magnanimous number.
It is a plaindrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13553) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1691 + ... + 1698.
It is an arithmetic number, because the mean of its divisors is an integer number (3955).
213556 is an apocalyptic number.
It is an amenable number.
13556 is a deficient number, since it is larger than the sum of its proper divisors (10174).
13556 is a wasteful number, since it uses less digits than its factorization.
13556 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3393 (or 3391 counting only the distinct ones).
The product of its digits is 450, while the sum is 20.
The square root of 13556 is about 116.4302366226.
The cubic root of 13556 is about 23.8438942334.
The spelling of 13556 in words is "thirteen thousand, five hundred fifty-six".