6544481 has 2 divisors, whose sum is σ = 6544482. Its totient is φ = 6544480.

The previous prime is 6544453. The next prime is 6544487. The reversal of 6544481 is 1844456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3936256 + 2608225 = 1984^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544481 - 2¹⁰ = 6543457 is a prime.

It is a super-2 number, since 2×6544481² = 85660463118722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6544487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272240 + 3272241.

It is an arithmetic number, because the mean of its divisors is an integer number (3272241).

Almost surely, 2^6544481 is an apocalyptic number.

It is an amenable number.

6544481 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544481 is an equidigital number, since it uses as much as digits as its factorization.

6544481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 32.

The square root of 6544481 is about 2558.2183253194. The cubic root of 6544481 is about 187.0502976982.

The spelling of 6544481 in words is "six million, five hundred forty-four thousand, four hundred eighty-one".