51923 has 4 divisors (see below), whose sum is σ = 52440. Its totient is φ = 51408.

The previous prime is 51913. The next prime is 51929. The reversal of 51923 is 32915.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51923 - 2⁴ = 51907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51895 and 51904.

It is not an unprimeable number, because it can be changed into a prime (51929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53 + ... + 326.

It is an arithmetic number, because the mean of its divisors is an integer number (13110).

2⁵¹⁹²³ is an apocalyptic number.

51923 is a deficient number, since it is larger than the sum of its proper divisors (517).

51923 is a wasteful number, since it uses less digits than its factorization.

51923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its digits is 270, while the sum is 20.

The square root of 51923 is about 227.8661888039. The cubic root of 51923 is about 37.3066791749.

It can be divided in two parts, 5192 and 3, that multiplied together give a triangular number (15576 = T₁₇₆).

The spelling of 51923 in words is "fifty-one thousand, nine hundred twenty-three".