6555520 has 32 divisors (see below), whose sum is σ = 15673320. Its totient is φ = 2621952.

The previous prime is 6555503. The next prime is 6555541. The reversal of 6555520 is 255556.

It is a tau number, because it is divible by the number of its divisors (32).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4482 + ... + 5761.

Almost surely, 2^6555520 is an apocalyptic number.

It is an amenable number.

6555520 is an abundant number, since it is smaller than the sum of its proper divisors (9117800).

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

6555520 is a wasteful number, since it uses less digits than its factorization.

6555520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10262 (or 10250 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 6555520 is about 2560.3749725382. The cubic root of 6555520 is about 187.1554085721.

The spelling of 6555520 in words is "six million, five hundred fifty-five thousand, five hundred twenty".