5659561 has 4 divisors (see below), whose sum is σ = 5674500. Its totient is φ = 5644624.

The previous prime is 5659559. The next prime is 5659567. The reversal of 5659561 is 1659565.

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 3083536 + 2576025 = 1756^2 + 1605^2 .

It is a cyclic number.

It is not a de Polignac number, because 5659561 - 2¹ = 5659559 is a prime.

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 5659561.

It is not an unprimeable number, because it can be changed into a prime (5659567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6886 + ... + 7663.

It is an arithmetic number, because the mean of its divisors is an integer number (1418625).

Almost surely, 2^5659561 is an apocalyptic number.

It is an amenable number.

5659561 is a deficient number, since it is larger than the sum of its proper divisors (14939).

5659561 is a wasteful number, since it uses less digits than its factorization.

5659561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14938.

The product of its digits is 40500, while the sum is 37.

The square root of 5659561 is about 2378.9831861533. The cubic root of 5659561 is about 178.2081581960.

The spelling of 5659561 in words is "five million, six hundred fifty-nine thousand, five hundred sixty-one".