51332405200 has 60 divisors (see below), whose sum is σ = 123437586220. Its totient is φ = 20514401280.

The previous prime is 51332405177. The next prime is 51332405219. The reversal of 51332405200 is 250423315.

It can be written as a sum of positive squares in 6 ways, for example, as 7703221824 + 43629183376 = 87768^2 + 208876^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389356 + ... + 504244.

Almost surely, 2^51332405200 is an apocalyptic number.

51332405200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51332405200 is an abundant number, since it is smaller than the sum of its proper divisors (72105181020).

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

51332405200 is a wasteful number, since it uses less digits than its factorization.

51332405200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116024 (or 116013 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 51332405200 its reverse (250423315), we get a palindrome (51582828515).

The spelling of 51332405200 in words is "fifty-one billion, three hundred thirty-two million, four hundred five thousand, two hundred".