6564582550 has 48 divisors (see below), whose sum is σ = 12570748992. Its totient is φ = 2548627200.

The previous prime is 6564582511. The next prime is 6564582551. The reversal of 6564582550 is 552854656.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6564582550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564582551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 793234 + ... + 801466.

It is an arithmetic number, because the mean of its divisors is an integer number (261890604).

Almost surely, 2^6564582550 is an apocalyptic number.

6564582550 is a deficient number, since it is larger than the sum of its proper divisors (6006166442).

6564582550 is a wasteful number, since it uses less digits than its factorization.

6564582550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8713 (or 8708 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 46.

The square root of 6564582550 is about 81022.1114881611. Note that the first 3 decimals coincide. The cubic root of 6564582550 is about 1872.4161196838.

The spelling of 6564582550 in words is "six billion, five hundred sixty-four million, five hundred eighty-two thousand, five hundred fifty".