51999996 has 24 divisors (see below), whose sum is σ = 123624144. Its totient is φ = 17006080.

The previous prime is 51999971. The next prime is 52000007. The reversal of 51999996 is 69999915.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40245 + ... + 41516.

It is an arithmetic number, because the mean of its divisors is an integer number (5151006).

Almost surely, 2^51999996 is an apocalyptic number.

It is an amenable number.

51999996 is an abundant number, since it is smaller than the sum of its proper divisors (71624148).

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

51999996 is a wasteful number, since it uses less digits than its factorization.

51999996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81821 (or 81819 counting only the distinct ones).

The product of its digits is 1771470, while the sum is 57.

The square root of 51999996 is about 7211.1022735779. The cubic root of 51999996 is about 373.2511061112.

The spelling of 51999996 in words is "fifty-one million, nine hundred ninety-nine thousand, nine hundred ninety-six".