5561044500 has 192 divisors, whose sum is σ = 18145370880. Its totient is φ = 1311552000.

The previous prime is 5561044499. The next prime is 5561044501. The reversal of 5561044500 is 54401655.

It is an interprime number because it is at equal distance from previous prime (5561044499) and next prime (5561044501).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561044501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 605946 + ... + 615054.

It is an arithmetic number, because the mean of its divisors is an integer number (94507140).

Almost surely, 2^5561044500 is an apocalyptic number.

5561044500 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 5561044500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9072685440).

5561044500 is an abundant number, since it is smaller than the sum of its proper divisors (12584326380).

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

5561044500 is a wasteful number, since it uses less digits than its factorization.

5561044500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179 (or 9167 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 5561044500 is about 74572.4111183218. The cubic root of 5561044500 is about 1771.6807106968.

The spelling of 5561044500 in words is "five billion, five hundred sixty-one million, forty-four thousand, five hundred".