8557056 has 80 divisors (see below), whose sum is σ = 25370400. Its totient is φ = 2847744.

The previous prime is 8557033. The next prime is 8557057. The reversal of 8557056 is 6507558.

8557056 is a `hidden beast` number, since 85 + 570 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8557056.

It is not an unprimeable number, because it can be changed into a prime (8557057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13515 + ... + 14133.

It is an arithmetic number, because the mean of its divisors is an integer number (317130).

Almost surely, 2^8557056 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 8557056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12685200).

8557056 is an abundant number, since it is smaller than the sum of its proper divisors (16813344).

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

8557056 is an equidigital number, since it uses as much as digits as its factorization.

8557056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 8557056 is about 2925.2446051570. The cubic root of 8557056 is about 204.5383703405.

The spelling of 8557056 in words is "eight million, five hundred fifty-seven thousand, fifty-six".