5564864521 has 2 divisors, whose sum is σ = 5564864522. Its totient is φ = 5564864520.

The previous prime is 5564864509. The next prime is 5564864561. The reversal of 5564864521 is 1254684655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5563518921 + 1345600 = 74589^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 5564864521 - 2⁹ = 5564864009 is a prime.

It is not a weakly prime, because it can be changed into another prime (5564864561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782432260 + 2782432261.

It is an arithmetic number, because the mean of its divisors is an integer number (2782432261).

Almost surely, 2^5564864521 is an apocalyptic number.

It is an amenable number.

5564864521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5564864521 is an equidigital number, since it uses as much as digits as its factorization.

5564864521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152000, while the sum is 46.

The square root of 5564864521 is about 74598.0195514599. The cubic root of 5564864521 is about 1772.0862884883.

The spelling of 5564864521 in words is "five billion, five hundred sixty-four million, eight hundred sixty-four thousand, five hundred twenty-one".