6387541 has 2 divisors, whose sum is σ = 6387542. Its totient is φ = 6387540.

The previous prime is 6387539. The next prime is 6387559. The reversal of 6387541 is 1457836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4605316 + 1782225 = 2146^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 6387541 - 2¹ = 6387539 is a prime.

Together with 6387539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6387497 and 6387506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6387041) 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, 3193770 + 3193771.

It is an arithmetic number, because the mean of its divisors is an integer number (3193771).

Almost surely, 2^6387541 is an apocalyptic number.

It is an amenable number.

6387541 is a deficient number, since it is larger than the sum of its proper divisors (1).

6387541 is an equidigital number, since it uses as much as digits as its factorization.

6387541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 6387541 is about 2527.3585024685. The cubic root of 6387541 is about 185.5429968406.

It can be divided in two parts, 6 and 387541, that multiplied together give a triangular number (2325246 = T₂₁₅₆).

The spelling of 6387541 in words is "six million, three hundred eighty-seven thousand, five hundred forty-one".