56211551600 has 60 divisors (see below), whose sum is σ = 135319371000. Its totient is φ = 22439481600.

The previous prime is 56211551579. The next prime is 56211551609. The reversal of 56211551600 is 615511265.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56211551609) 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 11 ways as a sum of consecutive naturals, for example, 58790 + ... + 340410.

It is an arithmetic number, because the mean of its divisors is an integer number (2255322850).

Almost surely, 2^56211551600 is an apocalyptic number.

56211551600 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 56211551600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67659685500).

56211551600 is an abundant number, since it is smaller than the sum of its proper divisors (79107819400).

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

56211551600 is a wasteful number, since it uses less digits than its factorization.

56211551600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282138 (or 282127 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 56211551600 in words is "fifty-six billion, two hundred eleven million, five hundred fifty-one thousand, six hundred".