51036930 has 144 divisors (see below), whose sum is σ = 157495104. Its totient is φ = 11430720.

The previous prime is 51036917. The next prime is 51036959. The reversal of 51036930 is 3963015.

It is a junction number, because it is equal to n+sod(n) for n = 51036894 and 51036903.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 313029 + ... + 313191.

It is an arithmetic number, because the mean of its divisors is an integer number (1093716).

Almost surely, 2^51036930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51036930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78747552).

51036930 is an abundant number, since it is smaller than the sum of its proper divisors (106458174).

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

51036930 is a wasteful number, since it uses less digits than its factorization.

51036930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 51036930 is about 7144.0135778146. The cubic root of 51036930 is about 370.9324666444.

Adding to 51036930 its reverse (3963015), we get a palindrome (54999945).

The spelling of 51036930 in words is "fifty-one million, thirty-six thousand, nine hundred thirty".