8561456 has 40 divisors (see below), whose sum is σ = 17582208. Its totient is φ = 4032000.

The previous prime is 8561447. The next prime is 8561471. The reversal of 8561456 is 6541658.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20126 + ... + 20546.

Almost surely, 2^8561456 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 8561456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8791104).

8561456 is an abundant number, since it is smaller than the sum of its proper divisors (9020752).

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

8561456 is a wasteful number, since it uses less digits than its factorization.

8561456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 495 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 8561456 is about 2925.9965823630. The cubic root of 8561456 is about 204.5734219058.

The spelling of 8561456 in words is "eight million, five hundred sixty-one thousand, four hundred fifty-six".