51908982 has 16 divisors (see below), whose sum is σ = 103902912. Its totient is φ = 17288840.

The previous prime is 51908981. The next prime is 51909001. The reversal of 51908982 is 28980915.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51908981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6673 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (6493932).

Almost surely, 2^51908982 is an apocalyptic number.

51908982 is an abundant number, since it is smaller than the sum of its proper divisors (51993930).

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

51908982 is a wasteful number, since it uses less digits than its factorization.

51908982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 51908982 is about 7204.7888241086. The cubic root of 51908982 is about 373.0332156138.

The spelling of 51908982 in words is "fifty-one million, nine hundred eight thousand, nine hundred eighty-two".