51200012 has 12 divisors (see below), whose sum is σ = 89795160. Its totient is φ = 25544256.

The previous prime is 51199991. The next prime is 51200027. The reversal of 51200012 is 21000215.

It is a junction number, because it is equal to n+sod(n) for n = 51199966 and 51200002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11837 + ... + 15572.

It is an arithmetic number, because the mean of its divisors is an integer number (7482930).

Almost surely, 2^51200012 is an apocalyptic number.

It is an amenable number.

51200012 is a deficient number, since it is larger than the sum of its proper divisors (38595148).

51200012 is a wasteful number, since it uses less digits than its factorization.

51200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27880 (or 27878 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 51200012 is about 7155.4183665248. The cubic root of 51200012 is about 371.3271356990.

Adding to 51200012 its reverse (21000215), we get a palindrome (72200227).

The spelling of 51200012 in words is "fifty-one million, two hundred thousand, twelve".