5563546561 has 4 divisors (see below), whose sum is σ = 5572364224. Its totient is φ = 5554728900.

The previous prime is 5563546511. The next prime is 5563546601. The reversal of 5563546561 is 1656453655.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1656453655 = 5 ⋅331290731.

It is a cyclic number.

It is not a de Polignac number, because 5563546561 - 2⁷ = 5563546433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5563546511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4407885 + ... + 4409146.

It is an arithmetic number, because the mean of its divisors is an integer number (1393091056).

Almost surely, 2^5563546561 is an apocalyptic number.

It is an amenable number.

5563546561 is a deficient number, since it is larger than the sum of its proper divisors (8817663).

5563546561 is an equidigital number, since it uses as much as digits as its factorization.

5563546561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8817662.

The product of its digits is 1620000, while the sum is 46.

The square root of 5563546561 is about 74589.1852817820. The cubic root of 5563546561 is about 1771.9463795268.

The spelling of 5563546561 in words is "five billion, five hundred sixty-three million, five hundred forty-six thousand, five hundred sixty-one".