5561011000 has 128 divisors (see below), whose sum is σ = 13535683200. Its totient is φ = 2135884800.

The previous prime is 5561010997. The next prime is 5561011007. The reversal of 5561011000 is 1101655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561011007) 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 31 ways as a sum of consecutive naturals, for example, 6756589 + ... + 6757411.

It is an arithmetic number, because the mean of its divisors is an integer number (105747525).

Almost surely, 2^5561011000 is an apocalyptic number.

5561011000 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 5561011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6767841600).

5561011000 is an abundant number, since it is smaller than the sum of its proper divisors (7974672200).

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

5561011000 is a wasteful number, since it uses less digits than its factorization.

5561011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 5561011000 is about 74572.1865040848. The cubic root of 5561011000 is about 1771.6771531263.

Adding to 5561011000 its reverse (1101655), we get a palindrome (5562112655).

The spelling of 5561011000 in words is "five billion, five hundred sixty-one million, eleven thousand".