6521875 has 12 divisors (see below), whose sum is σ = 8155728. Its totient is φ = 5215000.

The previous prime is 6521843. The next prime is 6521899. The reversal of 6521875 is 5781256.

6521875 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6521875 - 2⁵ = 6521843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6521875.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2082 + ... + 4168.

It is an arithmetic number, because the mean of its divisors is an integer number (679644).

Almost surely, 2^6521875 is an apocalyptic number.

6521875 is a deficient number, since it is larger than the sum of its proper divisors (1633853).

6521875 is an frugal number, since it uses more digits than its factorization.

6521875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112 (or 2092 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 6521875 is about 2553.7961939043. The cubic root of 6521875 is about 186.8346790187.

It can be divided in two parts, 6521 and 875, that added together give a square (7396 = 86²).

The spelling of 6521875 in words is "six million, five hundred twenty-one thousand, eight hundred seventy-five".