51010420210 has 8 divisors (see below), whose sum is σ = 91818756396. Its totient is φ = 20404168080.

The previous prime is 51010420189. The next prime is 51010420229. The reversal of 51010420210 is 1202401015.

It can be written as a sum of positive squares in 2 ways, for example, as 44197073361 + 6813346849 = 210231^2 + 82543^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2550521001 + ... + 2550521020.

Almost surely, 2^51010420210 is an apocalyptic number.

51010420210 is a deficient number, since it is larger than the sum of its proper divisors (40808336186).

51010420210 is a wasteful number, since it uses less digits than its factorization.

51010420210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101042028.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 51010420210 its reverse (1202401015), we get a palindrome (52212821225).

The spelling of 51010420210 in words is "fifty-one billion, ten million, four hundred twenty thousand, two hundred ten".