5555521855 has 16 divisors (see below), whose sum is σ = 7246550304. Its totient is φ = 4064192640.

The previous prime is 5555521841. The next prime is 5555521859. The reversal of 5555521855 is 5581255555.

It is not a de Polignac number, because 5555521855 - 2¹¹ = 5555519807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555521859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392436 + ... + 406345.

It is an arithmetic number, because the mean of its divisors is an integer number (452909394).

Almost surely, 2^5555521855 is an apocalyptic number.

5555521855 is a deficient number, since it is larger than the sum of its proper divisors (1691028449).

5555521855 is a wasteful number, since it uses less digits than its factorization.

5555521855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798906.

The product of its digits is 1250000, while the sum is 46.

The square root of 5555521855 is about 74535.3731794508. The cubic root of 5555521855 is about 1771.0940340787.

The spelling of 5555521855 in words is "five billion, five hundred fifty-five million, five hundred twenty-one thousand, eight hundred fifty-five".