6541403 has 8 divisors (see below), whose sum is σ = 7366656. Its totient is φ = 5754600.

The previous prime is 6541393. The next prime is 6541429. The reversal of 6541403 is 3041456.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6541403 - 2²⁰ = 5492827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6541433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9251 + ... + 9932.

It is an arithmetic number, because the mean of its divisors is an integer number (920832).

Almost surely, 2^6541403 is an apocalyptic number.

6541403 is a deficient number, since it is larger than the sum of its proper divisors (825253).

6541403 is a wasteful number, since it uses less digits than its factorization.

6541403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19225.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 6541403 is about 2557.6166640058. The cubic root of 6541403 is about 187.0209686039.

Adding to 6541403 its reverse (3041456), we get a palindrome (9582859).

The spelling of 6541403 in words is "six million, five hundred forty-one thousand, four hundred three".