5555000000 has 224 divisors, whose sum is σ = 15180429888. Its totient is φ = 2000000000.

The previous prime is 5554999987. The next prime is 5555000029. The reversal of 5555000000 is 5555.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54999950 + ... + 55000050.

Almost surely, 2^5555000000 is an apocalyptic number.

5555000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5555000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7590214944).

5555000000 is an abundant number, since it is smaller than the sum of its proper divisors (9625429888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5555000000 is an frugal number, since it uses more digits than its factorization.

5555000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 20.

The square root of 5555000000 is about 74531.8723768563. The cubic root of 5555000000 is about 1771.0385767492.

Adding to 5555000000 its reverse (5555), we get a palindrome (5555005555).

Multiplying 5555000000 by its reverse (5555), we get a square (30858025000000 = 5555000²).

5555000000 divided by its reverse (5555) gives a 6-th power (1000000 = 10⁶).

It can be divided in two parts, 55 and 55000000, that multiplied together give a square (3025000000 = 55000²).

The spelling of 5555000000 in words is "five billion, five hundred fifty-five million", and thus it is an aban number.