6444541 has 2 divisors, whose sum is σ = 6444542. Its totient is φ = 6444540.

The previous prime is 6444533. The next prime is 6444551. The reversal of 6444541 is 1454446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3916441 + 2528100 = 1979^2 + 1590^2 .

It is a cyclic number.

It is not a de Polignac number, because 6444541 - 2³ = 6444533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6444521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222270 + 3222271.

It is an arithmetic number, because the mean of its divisors is an integer number (3222271).

Almost surely, 2^6444541 is an apocalyptic number.

It is an amenable number.

6444541 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444541 is an equidigital number, since it uses as much as digits as its factorization.

6444541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 28.

The square root of 6444541 is about 2538.6100527651. The cubic root of 6444541 is about 186.0932684428.

Adding to 6444541 its reverse (1454446), we get a palindrome (7898987).

The spelling of 6444541 in words is "six million, four hundred forty-four thousand, five hundred forty-one".