6527005561 has 4 divisors (see below), whose sum is σ = 6678796432. Its totient is φ = 6375214692.

The previous prime is 6527005547. The next prime is 6527005579. The reversal of 6527005561 is 1655007256.

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 6527005561 - 2¹¹ = 6527003513 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 6527005561.

It is not an unprimeable number, because it can be changed into a prime (6527008561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75895371 + ... + 75895456.

It is an arithmetic number, because the mean of its divisors is an integer number (1669699108).

Almost surely, 2^6527005561 is an apocalyptic number.

It is an amenable number.

6527005561 is a deficient number, since it is larger than the sum of its proper divisors (151790871).

6527005561 is a wasteful number, since it uses less digits than its factorization.

6527005561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151790870.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 6527005561 is about 80789.8852641839. The cubic root of 6527005561 is about 1868.8365856668.

The spelling of 6527005561 in words is "six billion, five hundred twenty-seven million, five thousand, five hundred sixty-one".