51672786 has 16 divisors (see below), whose sum is σ = 112740768. Its totient is φ = 15658400.

The previous prime is 51672779. The next prime is 51672791. The reversal of 51672786 is 68727615.

51672786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 391395 + ... + 391526.

It is an arithmetic number, because the mean of its divisors is an integer number (7046298).

Almost surely, 2^51672786 is an apocalyptic number.

51672786 is an abundant number, since it is smaller than the sum of its proper divisors (61067982).

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

51672786 is a wasteful number, since it uses less digits than its factorization.

51672786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782937.

The product of its digits is 141120, while the sum is 42.

The square root of 51672786 is about 7188.3785376119. The cubic root of 51672786 is about 372.4665639703.

The spelling of 51672786 in words is "fifty-one million, six hundred seventy-two thousand, seven hundred eighty-six".