6540003271 has 2 divisors, whose sum is σ = 6540003272. Its totient is φ = 6540003270.

The previous prime is 6540003221. The next prime is 6540003289. The reversal of 6540003271 is 1723000456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6540003271 - 2⁹ = 6540002759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6540003221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270001635 + 3270001636.

It is an arithmetic number, because the mean of its divisors is an integer number (3270001636).

Almost surely, 2^6540003271 is an apocalyptic number.

6540003271 is a deficient number, since it is larger than the sum of its proper divisors (1).

6540003271 is an equidigital number, since it uses as much as digits as its factorization.

6540003271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 6540003271 is about 80870.2867003697. The cubic root of 6540003271 is about 1870.0762807397.

The spelling of 6540003271 in words is "six billion, five hundred forty million, three thousand, two hundred seventy-one".