51636884 has 24 divisors (see below), whose sum is σ = 97540968. Its totient is φ = 23777280.

The previous prime is 51636881. The next prime is 51636899. The reversal of 51636884 is 48863615.

51636884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20052484 + 31584400 = 4478^2 + 5620^2 .

It is a super-3 number, since 3×51636884³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51636881) 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 7 ways as a sum of consecutive naturals, for example, 29144 + ... + 30864.

It is an arithmetic number, because the mean of its divisors is an integer number (4064207).

Almost surely, 2^51636884 is an apocalyptic number.

It is an amenable number.

51636884 is a deficient number, since it is larger than the sum of its proper divisors (45904084).

51636884 is a wasteful number, since it uses less digits than its factorization.

51636884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315 (or 2313 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 51636884 is about 7185.8808785006. The cubic root of 51636884 is about 372.3802813329.

The spelling of 51636884 in words is "fifty-one million, six hundred thirty-six thousand, eight hundred eighty-four".