8555555553 has 64 divisors (see below), whose sum is σ = 12502425600. Its totient is φ = 5190958080.

The previous prime is 8555555539. The next prime is 8555555563. The reversal of 8555555553 is 3555555558.

It is not a de Polignac number, because 8555555553 - 2⁵ = 8555555521 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 8555555496 and 8555555505.

It is not an unprimeable number, because it can be changed into a prime (8555555563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20418778 + ... + 20419196.

It is an arithmetic number, because the mean of its divisors is an integer number (195350400).

Almost surely, 2^8555555553 is an apocalyptic number.

It is an amenable number.

8555555553 is a deficient number, since it is larger than the sum of its proper divisors (3946870047).

8555555553 is a wasteful number, since it uses less digits than its factorization.

8555555553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662.

The product of its digits is 9375000, while the sum is 51.

The square root of 8555555553 is about 92496.2461562630. The cubic root of 8555555553 is about 2045.2641463503.

It can be divided in two parts, 855555555 and 3, that added together give a palindrome (855555558).

The spelling of 8555555553 in words is "eight billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-three".