5556644555 has 16 divisors (see below), whose sum is σ = 8313318144. Its totient is φ = 3463882080.

The previous prime is 5556644551. The next prime is 5556644573. The reversal of 5556644555 is 5554466555.

It is not a de Polignac number, because 5556644555 - 2² = 5556644551 is a prime.

It is a super-2 number, since 2×5556644555² = 61752597421222296050, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (5556644551) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7216037 + ... + 7216806.

It is an arithmetic number, because the mean of its divisors is an integer number (519582384).

Almost surely, 2^5556644555 is an apocalyptic number.

5556644555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5556644555 is a deficient number, since it is larger than the sum of its proper divisors (2756673589).

5556644555 is a wasteful number, since it uses less digits than its factorization.

5556644555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14432866.

The product of its digits is 9000000, while the sum is 50.

The square root of 5556644555 is about 74542.9041223912. The cubic root of 5556644555 is about 1771.2133312030.

The spelling of 5556644555 in words is "five billion, five hundred fifty-six million, six hundred forty-four thousand, five hundred fifty-five".