6533641 has 2 divisors, whose sum is σ = 6533642. Its totient is φ = 6533640.

The previous prime is 6533623. The next prime is 6533647. The reversal of 6533641 is 1463356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5861241 + 672400 = 2421^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 6533641 - 2¹¹ = 6531593 is a prime.

It is a super-3 number, since 3×6533641³ (a number of 21 digits) contains 333 as substring.

It is a Chen prime.

It is an Ulam number.

6533641 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6533647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3266820 + 3266821.

It is an arithmetic number, because the mean of its divisors is an integer number (3266821).

Almost surely, 2^6533641 is an apocalyptic number.

It is an amenable number.

6533641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6533641 is an equidigital number, since it uses as much as digits as its factorization.

6533641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 6533641 is about 2556.0987852585. The cubic root of 6533641 is about 186.9469665734.

Adding to 6533641 its reverse (1463356), we get a palindrome (7996997).

The spelling of 6533641 in words is "six million, five hundred thirty-three thousand, six hundred forty-one".