6533561 has 2 divisors, whose sum is σ = 6533562. Its totient is φ = 6533560.

The previous prime is 6533509. The next prime is 6533567. The reversal of 6533561 is 1653356.

6533561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6150400 + 383161 = 2480^2 + 619^2 .

It is a cyclic number.

It is not a de Polignac number, because 6533561 - 2¹⁴ = 6517177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6533567) 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, 3266780 + 3266781.

It is an arithmetic number, because the mean of its divisors is an integer number (3266781).

Almost surely, 2^6533561 is an apocalyptic number.

It is an amenable number.

6533561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6533561 is an equidigital number, since it uses as much as digits as its factorization.

6533561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 29.

The square root of 6533561 is about 2556.0831363631. The cubic root of 6533561 is about 186.9462035573.

The spelling of 6533561 in words is "six million, five hundred thirty-three thousand, five hundred sixty-one".