6561575 has 12 divisors (see below), whose sum is σ = 8615520. Its totient is φ = 4940160.

The previous prime is 6561557. The next prime is 6561589. The reversal of 6561575 is 5751656.

It is not a de Polignac number, because 6561575 - 2⁸ = 6561319 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 7295 + ... + 8144.

It is an arithmetic number, because the mean of its divisors is an integer number (717960).

Almost surely, 2^6561575 is an apocalyptic number.

6561575 is a deficient number, since it is larger than the sum of its proper divisors (2053945).

6561575 is a wasteful number, since it uses less digits than its factorization.

6561575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466 (or 15461 counting only the distinct ones).

The product of its digits is 31500, while the sum is 35.

The square root of 6561575 is about 2561.5571436140. The cubic root of 6561575 is about 187.2130128139.

The spelling of 6561575 in words is "six million, five hundred sixty-one thousand, five hundred seventy-five".