6541243 has 4 divisors (see below), whose sum is σ = 6926040. Its totient is φ = 6156448.

The previous prime is 6541229. The next prime is 6541247. The reversal of 6541243 is 3421456.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6541243 - 2¹⁷ = 6410171 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 5⁷ + 4 + 1 + 2⁹ + 4² + 3¹⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6541247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192373 + ... + 192406.

It is an arithmetic number, because the mean of its divisors is an integer number (1731510).

Almost surely, 2^6541243 is an apocalyptic number.

6541243 is a deficient number, since it is larger than the sum of its proper divisors (384797).

6541243 is a wasteful number, since it uses less digits than its factorization.

6541243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384796.

The product of its digits is 2880, while the sum is 25.

The square root of 6541243 is about 2557.5853846939. The cubic root of 6541243 is about 187.0194437731.

Adding to 6541243 its reverse (3421456), we get a palindrome (9962699).

The spelling of 6541243 in words is "six million, five hundred forty-one thousand, two hundred forty-three".