56561525244 has 144 divisors (see below), whose sum is σ = 168269989888. Its totient is φ = 15683601024.

The previous prime is 56561525219. The next prime is 56561525257. The reversal of 56561525244 is 44252516565.

56561525244 is a `hidden beast` number, since 5 + 6 + 5 + 615 + 2 + 5 + 24 + 4 = 666.

It is a super-2 number, since 2×56561525244² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56561525244.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1684629 + ... + 1717875.

Almost surely, 2^56561525244 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 56561525244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84134994944).

56561525244 is an abundant number, since it is smaller than the sum of its proper divisors (111708464644).

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

56561525244 is a wasteful number, since it uses less digits than its factorization.

56561525244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33464 (or 33459 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 45.

The spelling of 56561525244 in words is "fifty-six billion, five hundred sixty-one million, five hundred twenty-five thousand, two hundred forty-four".