6512561 has 8 divisors (see below), whose sum is σ = 7146048. Its totient is φ = 5886000.

The previous prime is 6512537. The next prime is 6512579. The reversal of 6512561 is 1652156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6512561 - 2¹⁰ = 6511537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 6512561.

It is not an unprimeable number, because it can be changed into a prime (6512521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356 + ... + 3626.

It is an arithmetic number, because the mean of its divisors is an integer number (893256).

Almost surely, 2^6512561 is an apocalyptic number.

It is an amenable number.

6512561 is a deficient number, since it is larger than the sum of its proper divisors (633487).

6512561 is a wasteful number, since it uses less digits than its factorization.

6512561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463.

The product of its digits is 1800, while the sum is 26.

The square root of 6512561 is about 2551.9719826048. The cubic root of 6512561 is about 186.7456960574.

The spelling of 6512561 in words is "six million, five hundred twelve thousand, five hundred sixty-one".