6543252 has 18 divisors (see below), whose sum is σ = 16539978. Its totient is φ = 2181072.

The previous prime is 6543233. The next prime is 6543259. The reversal of 6543252 is 2523456.

6543252 is a `hidden beast` number, since 654 + 3 + 2 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5363856 + 1179396 = 2316^2 + 1086^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an alternating number because its digits alternate between even and odd.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90843 + ... + 90914.

Almost surely, 2^6543252 is an apocalyptic number.

It is an amenable number.

6543252 is an abundant number, since it is smaller than the sum of its proper divisors (9996726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6543252 is a wasteful number, since it uses less digits than its factorization.

6543252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181767 (or 181762 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 6543252 is about 2557.9781078031. The cubic root of 6543252 is about 187.0385881265.

The spelling of 6543252 in words is "six million, five hundred forty-three thousand, two hundred fifty-two".