6543253 has 4 divisors (see below), whose sum is σ = 6556288. Its totient is φ = 6530220.

The previous prime is 6543233. The next prime is 6543259. The reversal of 6543253 is 3523456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6543253 - 2¹⁷ = 6412181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543259) 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, 5733 + ... + 6778.

It is an arithmetic number, because the mean of its divisors is an integer number (1639072).

Almost surely, 2^6543253 is an apocalyptic number.

It is an amenable number.

6543253 is a deficient number, since it is larger than the sum of its proper divisors (13035).

6543253 is a wasteful number, since it uses less digits than its factorization.

6543253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13034.

The product of its digits is 10800, while the sum is 28.

The square root of 6543253 is about 2557.9783032700. The cubic root of 6543253 is about 187.0385976548.

The spelling of 6543253 in words is "six million, five hundred forty-three thousand, two hundred fifty-three".