8297561 has 4 divisors (see below), whose sum is σ = 8303412. Its totient is φ = 8291712.

The previous prime is 8297543. The next prime is 8297563. The reversal of 8297561 is 1657928.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5953600 + 2343961 = 2440^2 + 1531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8297561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8297563) 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, 701 + ... + 4133.

It is an arithmetic number, because the mean of its divisors is an integer number (2075853).

Almost surely, 2^8297561 is an apocalyptic number.

It is an amenable number.

8297561 is a deficient number, since it is larger than the sum of its proper divisors (5851).

8297561 is a wasteful number, since it uses less digits than its factorization.

8297561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850.

The product of its digits is 30240, while the sum is 38.

The square root of 8297561 is about 2880.5487324466. The cubic root of 8297561 is about 202.4495510154.

The spelling of 8297561 in words is "eight million, two hundred ninety-seven thousand, five hundred sixty-one".