5565121755 has 16 divisors (see below), whose sum is σ = 9372837120. Its totient is φ = 2811850848.

The previous prime is 5565121747. The next prime is 5565121759. The reversal of 5565121755 is 5571215655.

It is not a de Polignac number, because 5565121755 - 2³ = 5565121747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5565121759) 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 15 ways as a sum of consecutive naturals, for example, 9763087 + ... + 9763656.

It is an arithmetic number, because the mean of its divisors is an integer number (585802320).

Almost surely, 2^5565121755 is an apocalyptic number.

5565121755 is a deficient number, since it is larger than the sum of its proper divisors (3807715365).

5565121755 is a wasteful number, since it uses less digits than its factorization.

5565121755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19526770.

The product of its digits is 262500, while the sum is 42.

The square root of 5565121755 is about 74599.7436657794. The cubic root of 5565121755 is about 1772.1135927661.

The spelling of 5565121755 in words is "five billion, five hundred sixty-five million, one hundred twenty-one thousand, seven hundred fifty-five".