6541903 has 2 divisors, whose sum is σ = 6541904. Its totient is φ = 6541902.

The previous prime is 6541901. The next prime is 6541921. The reversal of 6541903 is 3091456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6541903 - 2¹ = 6541901 is a prime.

It is a super-2 number, since 2×6541903² = 85592989722818, which contains 22 as substring.

Together with 6541901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6541901) 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, 3270951 + 3270952.

It is an arithmetic number, because the mean of its divisors is an integer number (3270952).

Almost surely, 2^6541903 is an apocalyptic number.

6541903 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541903 is an equidigital number, since it uses as much as digits as its factorization.

6541903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 6541903 is about 2557.7144093898. The cubic root of 6541903 is about 187.0257335400.

The spelling of 6541903 in words is "six million, five hundred forty-one thousand, nine hundred three".