8561522 has 6 divisors (see below), whose sum is σ = 12848493. Its totient is φ = 4278692.

The previous prime is 8561503. The next prime is 8561537. The reversal of 8561522 is 2251658.

It can be written as a sum of positive squares in 2 ways, for example, as 7392961 + 1168561 = 2719^2 + 1081^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2069.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3104 + ... + 5172.

Almost surely, 2^8561522 is an apocalyptic number.

8561522 is a deficient number, since it is larger than the sum of its proper divisors (4286971).

8561522 is an frugal number, since it uses more digits than its factorization.

8561522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140 (or 2071 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 8561522 is about 2926.0078605499. The cubic root of 8561522 is about 204.5739475878.

The spelling of 8561522 in words is "eight million, five hundred sixty-one thousand, five hundred twenty-two".