51673 has 2 divisors, whose sum is σ = 51674. Its totient is φ = 51672.

The previous prime is 51659. The next prime is 51679. The reversal of 51673 is 37615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51529 + 144 = 227^2 + 12^2 .

It is a cyclic number.

It is not a de Polignac number, because 51673 - 2¹³ = 43481 is a prime.

51673 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25836 + 25837.

It is an arithmetic number, because the mean of its divisors is an integer number (25837).

2⁵¹⁶⁷³ is an apocalyptic number.

It is an amenable number.

51673 is a deficient number, since it is larger than the sum of its proper divisors (1).

51673 is an equidigital number, since it uses as much as digits as its factorization.

51673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630, while the sum is 22.

The square root of 51673 is about 227.3169593321. The cubic root of 51673 is about 37.2467078153.

The spelling of 51673 in words is "fifty-one thousand, six hundred seventy-three".