51555055230 has 128 divisors (see below), whose sum is σ = 157199616000. Its totient is φ = 11778054912.

The previous prime is 51555055229. The next prime is 51555055291. The reversal of 51555055230 is 3255055515.

51555055230 is a `hidden beast` number, since 5 + 1 + 55 + 50 + 552 + 3 + 0 = 666.

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 63 ways as a sum of consecutive naturals, for example, 4517071 + ... + 4528469.

It is an arithmetic number, because the mean of its divisors is an integer number (1228122000).

Almost surely, 2^51555055230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51555055230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78599808000).

51555055230 is an abundant number, since it is smaller than the sum of its proper divisors (105644560770).

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

51555055230 is a wasteful number, since it uses less digits than its factorization.

51555055230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13815 (or 13809 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The spelling of 51555055230 in words is "fifty-one billion, five hundred fifty-five million, fifty-five thousand, two hundred thirty".