51130218 has 8 divisors (see below), whose sum is σ = 102260448. Its totient is φ = 17043404.

The previous prime is 51130207. The next prime is 51130231. The reversal of 51130218 is 81203115.

51130218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

51130218 is an admirable number.

It is a super-2 number, since 2×51130218² = 5228598385455048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51130194 and 51130203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4260846 + ... + 4260857.

It is an arithmetic number, because the mean of its divisors is an integer number (12782556).

Almost surely, 2^51130218 is an apocalyptic number.

51130218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51130218 is a wasteful number, since it uses less digits than its factorization.

51130218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8521708.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 51130218 is about 7150.5396999108. The cubic root of 51130218 is about 371.1583324108.

The spelling of 51130218 in words is "fifty-one million, one hundred thirty thousand, two hundred eighteen".