51636867 has 16 divisors (see below), whose sum is σ = 71145120. Its totient is φ = 33288192.

The previous prime is 51636857. The next prime is 51636869. The reversal of 51636867 is 76863615.

51636867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51636867 - 2¹² = 51632771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51636869) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17859 + ... + 20547.

It is an arithmetic number, because the mean of its divisors is an integer number (4446570).

Almost surely, 2^51636867 is an apocalyptic number.

51636867 is a deficient number, since it is larger than the sum of its proper divisors (19508253).

51636867 is a wasteful number, since it uses less digits than its factorization.

51636867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902.

The product of its digits is 181440, while the sum is 42.

The square root of 51636867 is about 7185.8796956253. The cubic root of 51636867 is about 372.3802404676.

The spelling of 51636867 in words is "fifty-one million, six hundred thirty-six thousand, eight hundred sixty-seven".