56554510320 has 720 divisors, whose sum is σ = 245076680160. Its totient is φ = 11554099200.

The previous prime is 56554510303. The next prime is 56554510321. The reversal of 56554510320 is 2301545565.

56554510320 is a `hidden beast` number, since 5 + 6 + 5 + 545 + 103 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56554510321) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 23671686 + ... + 23674074.

It is an arithmetic number, because the mean of its divisors is an integer number (340384278).

Almost surely, 2^56554510320 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 56554510320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122538340080).

56554510320 is an abundant number, since it is smaller than the sum of its proper divisors (188522169840).

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

56554510320 is a wasteful number, since it uses less digits than its factorization.

56554510320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2478 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 56554510320 in words is "fifty-six billion, five hundred fifty-four million, five hundred ten thousand, three hundred twenty".