51992 has 16 divisors (see below), whose sum is σ = 99960. Its totient is φ = 25344.

The previous prime is 51991. The next prime is 52009. The reversal of 51992 is 29915.

It is a happy number.

51992 is nontrivially palindromic in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488 + ... + 584.

2⁵¹⁹⁹² is an apocalyptic number.

It is an amenable number.

51992 is a deficient number, since it is larger than the sum of its proper divisors (47968).

51992 is a wasteful number, since it uses less digits than its factorization.

51992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 166 counting only the distinct ones).

The product of its digits is 810, while the sum is 26.

The square root of 51992 is about 228.0175431847. The cubic root of 51992 is about 37.3231973617.

The spelling of 51992 in words is "fifty-one thousand, nine hundred ninety-two".