6542493 has 16 divisors (see below), whose sum is σ = 9151296. Its totient is φ = 4152960.

The previous prime is 6542491. The next prime is 6542513. The reversal of 6542493 is 3942456.

It is not a de Polignac number, because 6542493 - 2¹ = 6542491 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 5⁷ + 4 + 2⁹ + 4⁵ + 9⁷ + 3⁵ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542491) 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 in 15 ways as a sum of consecutive naturals, for example, 4671 + ... + 5907.

It is an arithmetic number, because the mean of its divisors is an integer number (571956).

Almost surely, 2^6542493 is an apocalyptic number.

It is an amenable number.

6542493 is a deficient number, since it is larger than the sum of its proper divisors (2608803).

6542493 is a wasteful number, since it uses less digits than its factorization.

6542493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its digits is 25920, while the sum is 33.

The square root of 6542493 is about 2557.8297441386. The cubic root of 6542493 is about 187.0313558523.

The spelling of 6542493 in words is "six million, five hundred forty-two thousand, four hundred ninety-three".