51966844 has 36 divisors (see below), whose sum is σ = 97549200. Its totient is φ = 24207040.

The previous prime is 51966829. The next prime is 51966857. The reversal of 51966844 is 44866915.

It is a self number, because there is not a number n which added to its sum of digits gives 51966844.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86457 + ... + 87055.

It is an arithmetic number, because the mean of its divisors is an integer number (2709700).

Almost surely, 2^51966844 is an apocalyptic number.

It is an amenable number.

51966844 is a deficient number, since it is larger than the sum of its proper divisors (45582356).

51966844 is a wasteful number, since it uses less digits than its factorization.

51966844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 665 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 51966844 is about 7208.8032293856. The cubic root of 51966844 is about 373.1717685971.

The spelling of 51966844 in words is "fifty-one million, nine hundred sixty-six thousand, eight hundred forty-four".