8556481 has 4 divisors (see below), whose sum is σ = 8584132. Its totient is φ = 8528832.

The previous prime is 8556463. The next prime is 8556487. The reversal of 8556481 is 1846558.

8556481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3534400 + 5022081 = 1880^2 + 2241^2 .

It is a cyclic number.

It is not a de Polignac number, because 8556481 - 2²¹ = 6459329 is a prime.

It is a super-2 number, since 2×8556481² = 146426734206722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8556481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8556487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13356 + ... + 13981.

It is an arithmetic number, because the mean of its divisors is an integer number (2146033).

Almost surely, 2^8556481 is an apocalyptic number.

It is an amenable number.

8556481 is a deficient number, since it is larger than the sum of its proper divisors (27651).

8556481 is a wasteful number, since it uses less digits than its factorization.

8556481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27650.

The product of its digits is 38400, while the sum is 37.

The square root of 8556481 is about 2925.1463211265. The cubic root of 8556481 is about 204.5337888506.

The spelling of 8556481 in words is "eight million, five hundred fifty-six thousand, four hundred eighty-one".