5561011056 has 80 divisors (see below), whose sum is σ = 14772054528. Its totient is φ = 1801612800.

The previous prime is 5561011037. The next prime is 5561011063. The reversal of 5561011056 is 6501101655.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 528115 + ... + 538541.

Almost surely, 2^5561011056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5561011056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7386027264).

5561011056 is an abundant number, since it is smaller than the sum of its proper divisors (9211043472).

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

5561011056 is a wasteful number, since it uses less digits than its factorization.

5561011056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10750 (or 10744 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 5561011056 is about 74572.1868795599. The cubic root of 5561011056 is about 1771.6771590733.

It can be divided in two parts, 55610 and 11056, that added together give a palindrome (66666).

The spelling of 5561011056 in words is "five billion, five hundred sixty-one million, eleven thousand, fifty-six".