It is an ABA number since it can be written as A⋅BA, here for A=2, B=53.
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
It is a plaindrome in base 7.
It is a nialpdrome in base 9.
It is a zygodrome in base 7.
It is a self number, because there is not a number n which added to its sum of digits gives 5618.
It is an unprimeable number.
25618 is an apocalyptic number.
5618 is an equidigital number, since it uses as much as digits as its factorization.
5618 is an evil number, because the sum of its binary digits is even.
The square root of 5618 is about 74.9533188058. The cubic root of 5618 is about 17.7770861999. Note that the first 3 decimals are identical.
The spelling of 5618 in words is "five thousand, six hundred eighteen".