6526561 has 4 divisors (see below), whose sum is σ = 6665472. Its totient is φ = 6387652.

The previous prime is 6526547. The next prime is 6526571. The reversal of 6526561 is 1656256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6526561 - 2⁵ = 6526529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6526501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69385 + ... + 69478.

It is an arithmetic number, because the mean of its divisors is an integer number (1666368).

Almost surely, 2^6526561 is an apocalyptic number.

It is an amenable number.

6526561 is a deficient number, since it is larger than the sum of its proper divisors (138911).

6526561 is a wasteful number, since it uses less digits than its factorization.

6526561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138910.

The product of its digits is 10800, while the sum is 31.

The square root of 6526561 is about 2554.7134868709. The cubic root of 6526561 is about 186.8794155249.

The spelling of 6526561 in words is "six million, five hundred twenty-six thousand, five hundred sixty-one".