5660561 has 2 divisors, whose sum is σ = 5660562. Its totient is φ = 5660560.

The previous prime is 5660531. The next prime is 5660579. The reversal of 5660561 is 1650665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5612161 + 48400 = 2369^2 + 220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5660561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5660521) 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 as a sum of consecutive naturals, namely, 2830280 + 2830281.

It is an arithmetic number, because the mean of its divisors is an integer number (2830281).

Almost surely, 2^5660561 is an apocalyptic number.

It is an amenable number.

5660561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5660561 is an equidigital number, since it uses as much as digits as its factorization.

5660561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 5660561 is about 2379.1933506968. The cubic root of 5660561 is about 178.2186535721.

The spelling of 5660561 in words is "five million, six hundred sixty thousand, five hundred sixty-one".