51683916 has 24 divisors (see below), whose sum is σ = 124755120. Its totient is φ = 16633792.

The previous prime is 51683911. The next prime is 51683917. The reversal of 51683916 is 61938615.

It is not an unprimeable number, because it can be changed into a prime (51683911) 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, 73911 + ... + 74606.

It is an arithmetic number, because the mean of its divisors is an integer number (5198130).

Almost surely, 2^51683916 is an apocalyptic number.

It is an amenable number.

51683916 is an abundant number, since it is smaller than the sum of its proper divisors (73071204).

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

51683916 is a wasteful number, since it uses less digits than its factorization.

51683916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148553 (or 148551 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 51683916 is about 7189.1526621710. The cubic root of 51683916 is about 372.4933043855.

The spelling of 51683916 in words is "fifty-one million, six hundred eighty-three thousand, nine hundred sixteen".