51230200 has 192 divisors, whose sum is σ = 149276160. Its totient is φ = 15966720.

The previous prime is 51230183. The next prime is 51230219. The reversal of 51230200 is 203215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1191379 + ... + 1191421.

It is an arithmetic number, because the mean of its divisors is an integer number (777480).

Almost surely, 2^51230200 is an apocalyptic number.

51230200 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 51230200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74638080).

51230200 is an abundant number, since it is smaller than the sum of its proper divisors (98045960).

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

51230200 is a wasteful number, since it uses less digits than its factorization.

51230200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 51230200 is about 7157.5275060596. The cubic root of 51230200 is about 371.4001006636.

Adding to 51230200 its reverse (203215), we get a palindrome (51433415).

The spelling of 51230200 in words is "fifty-one million, two hundred thirty thousand, two hundred".