5555005555 has 24 divisors (see below), whose sum is σ = 7345462032. Its totient is φ = 3999600000.

The previous prime is 5555005553. The next prime is 5555005567.

5555005555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5555005555 - 2¹ = 5555005553 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555005553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 556105 + ... + 566005.

It is an arithmetic number, because the mean of its divisors is an integer number (306060918).

Almost surely, 2^5555005555 is an apocalyptic number.

5555005555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5555005555 is a deficient number, since it is larger than the sum of its proper divisors (1790456477).

5555005555 is a wasteful number, since it uses less digits than its factorization.

5555005555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10119 (or 10018 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 40.

The square root of 5555005555 is about 74531.9096427832. The cubic root of 5555005555 is about 1771.0391670952.

It can be divided in two parts, 555500 and 5555, that multiplied together give a square (3085802500 = 55550²).

The spelling of 5555005555 in words is "five billion, five hundred fifty-five million, five thousand, five hundred fifty-five".