51985934 has 64 divisors (see below), whose sum is σ = 109347840. Its totient is φ = 17867520.

The previous prime is 51985891. The next prime is 51985939. The reversal of 51985934 is 43958915.

It is a happy number.

51985934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51985939) 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 31 ways as a sum of consecutive naturals, for example, 45482 + ... + 46610.

It is an arithmetic number, because the mean of its divisors is an integer number (1708560).

Almost surely, 2^51985934 is an apocalyptic number.

51985934 is an abundant number, since it is smaller than the sum of its proper divisors (57361906).

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

51985934 is a wasteful number, since it uses less digits than its factorization.

51985934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185.

The product of its digits is 194400, while the sum is 44.

The square root of 51985934 is about 7210.1271833443. The cubic root of 51985934 is about 373.2174578378.

The spelling of 51985934 in words is "fifty-one million, nine hundred eighty-five thousand, nine hundred thirty-four".