51206718 has 16 divisors (see below), whose sum is σ = 102951936. Its totient is φ = 16979160.

The previous prime is 51206711. The next prime is 51206777. The reversal of 51206718 is 81760215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51206711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21196 + ... + 23487.

It is an arithmetic number, because the mean of its divisors is an integer number (6434496).

Almost surely, 2^51206718 is an apocalyptic number.

51206718 is an abundant number, since it is smaller than the sum of its proper divisors (51745218).

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

51206718 is a wasteful number, since it uses less digits than its factorization.

51206718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44879.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 51206718 is about 7155.8869471226. The cubic root of 51206718 is about 371.3433467047.

The spelling of 51206718 in words is "fifty-one million, two hundred six thousand, seven hundred eighteen".