56554485780 has 192 divisors, whose sum is σ = 171895449600. Its totient is φ = 13810452480.

The previous prime is 56554485751. The next prime is 56554485787. The reversal of 56554485780 is 8758445565.

It is a self number, because there is not a number n which added to its sum of digits gives 56554485780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56554485787) 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, 85558650 + ... + 85559310.

It is an arithmetic number, because the mean of its divisors is an integer number (895288800).

Almost surely, 2^56554485780 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 56554485780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85947724800).

56554485780 is an abundant number, since it is smaller than the sum of its proper divisors (115340963820).

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

56554485780 is a wasteful number, since it uses less digits than its factorization.

56554485780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 1392 counting only the distinct ones).

The product of its (nonzero) digits is 26880000, while the sum is 57.

The spelling of 56554485780 in words is "fifty-six billion, five hundred fifty-four million, four hundred eighty-five thousand, seven hundred eighty".