5555661100 has 36 divisors (see below), whose sum is σ = 13151767608. Its totient is φ = 2020240000.

The previous prime is 5555661053. The next prime is 5555661107. The reversal of 5555661100 is 11665555.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (5555661107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2524201 + ... + 2526400.

It is an arithmetic number, because the mean of its divisors is an integer number (365326878).

Almost surely, 2^5555661100 is an apocalyptic number.

5555661100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5555661100 is an abundant number, since it is smaller than the sum of its proper divisors (7596106508).

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

5555661100 is a wasteful number, since it uses less digits than its factorization.

5555661100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050626 (or 5050619 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 5555661100 is about 74536.3072602876. The cubic root of 5555661100 is about 1771.1088310042.

The spelling of 5555661100 in words is "five billion, five hundred fifty-five million, six hundred sixty-one thousand, one hundred".