51173455200 has 144 divisors (see below), whose sum is σ = 190365315840. Its totient is φ = 11696785920.

The previous prime is 51173455183. The next prime is 51173455213. The reversal of 51173455200 is 255437115.

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 23 ways as a sum of consecutive naturals, for example, 1506220 + ... + 1539819.

It is an arithmetic number, because the mean of its divisors is an integer number (1321981360).

Almost surely, 2^51173455200 is an apocalyptic number.

51173455200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51173455200 is an abundant number, since it is smaller than the sum of its proper divisors (139191860640).

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

51173455200 is a wasteful number, since it uses less digits than its factorization.

51173455200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046069 (or 3046056 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The spelling of 51173455200 in words is "fifty-one billion, one hundred seventy-three million, four hundred fifty-five thousand, two hundred".