5565905123 has 4 divisors (see below), whose sum is σ = 5578819488. Its totient is φ = 5552990760.

The previous prime is 5565905119. The next prime is 5565905129. The reversal of 5565905123 is 3215095655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5565905123 - 2² = 5565905119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5565905129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6456536 + ... + 6457397.

It is an arithmetic number, because the mean of its divisors is an integer number (1394704872).

Almost surely, 2^5565905123 is an apocalyptic number.

5565905123 is a deficient number, since it is larger than the sum of its proper divisors (12914365).

5565905123 is a wasteful number, since it uses less digits than its factorization.

5565905123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12914364.

The product of its (nonzero) digits is 202500, while the sum is 41.

The square root of 5565905123 is about 74604.9939548285. The cubic root of 5565905123 is about 1772.1967387127.

The spelling of 5565905123 in words is "five billion, five hundred sixty-five million, nine hundred five thousand, one hundred twenty-three".