51215033300 has 18 divisors (see below), whose sum is σ = 111136622478. Its totient is φ = 20486013280.

The previous prime is 51215033291. The next prime is 51215033339. The reversal of 51215033300 is 333051215.

It can be written as a sum of positive squares in 3 ways, for example, as 14603272336 + 36611760964 = 120844^2 + 191342^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 256075067 + ... + 256075266.

Almost surely, 2^51215033300 is an apocalyptic number.

51215033300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51215033300 is an abundant number, since it is smaller than the sum of its proper divisors (59921589178).

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

51215033300 is a wasteful number, since it uses less digits than its factorization.

51215033300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512150347 (or 512150340 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 51215033300 its reverse (333051215), we get a palindrome (51548084515).

The spelling of 51215033300 in words is "fifty-one billion, two hundred fifteen million, thirty-three thousand, three hundred".