5605510561 has 4 divisors (see below), whose sum is σ = 6406297792. Its totient is φ = 4804723332.

The previous prime is 5605510531. The next prime is 5605510607. The reversal of 5605510561 is 1650155065.

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 5605510561 - 2¹³ = 5605502369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5605510531) 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, 400393605 + ... + 400393618.

It is an arithmetic number, because the mean of its divisors is an integer number (1601574448).

Almost surely, 2^5605510561 is an apocalyptic number.

It is an amenable number.

5605510561 is a deficient number, since it is larger than the sum of its proper divisors (800787231).

5605510561 is an equidigital number, since it uses as much as digits as its factorization.

5605510561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800787230.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 5605510561 is about 74869.9576666102. The cubic root of 5605510561 is about 1776.3902945732.

The spelling of 5605510561 in words is "five billion, six hundred five million, five hundred ten thousand, five hundred sixty-one".