27570 is a member of OEIS A155023: values of n such that n^a + a and n^a - a are primes where a=11. The sequence can be generated as follows (permalink):
INPUT
a=11
L=[]
for n in [1..40000]:
if is_prime(n^a+a) and is_prime(n^a-a):
L.append(n)
print(L)
print(len(L))
OUTPUT
[1770, 10182, 11700, 12090, 16548, 24192, 27570, 29142, 29148]
9
27570 is an untouchable, abundant, Zumkeller and pseudoperfect number.
27570 has an aliquot sequence that does not terminate after 101 steps.
27570 reaches a home prime in one step since 235919 is prime.
27570 can be rendered as a digit equation as follows:
-2 + 7 = 5 + 7 * 0