51916 has 6 divisors (see below), whose sum is σ = 90860. Its totient is φ = 25956.

The previous prime is 51913. The next prime is 51929. The reversal of 51916 is 61915.

51916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6486 + ... + 6493.

2⁵¹⁹¹⁶ is an apocalyptic number.

It is an amenable number.

51916 is a deficient number, since it is larger than the sum of its proper divisors (38944).

51916 is a wasteful number, since it uses less digits than its factorization.

51916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12983 (or 12981 counting only the distinct ones).

The product of its digits is 270, while the sum is 22.

The square root of 51916 is about 227.8508283944. The cubic root of 51916 is about 37.3050025994.

Subtracting 51916 from its reverse (61915), we obtain a palindrome (9999).

It can be divided in two parts, 519 and 16, that added together give a palindrome (535).

The spelling of 51916 in words is "fifty-one thousand, nine hundred sixteen".