51871733 has 2 divisors, whose sum is σ = 51871734. Its totient is φ = 51871732.

The previous prime is 51871697. The next prime is 51871751. The reversal of 51871733 is 33717815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51509329 + 362404 = 7177^2 + 602^2 .

It is a cyclic number.

It is not a de Polignac number, because 51871733 - 2¹² = 51867637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51871693 and 51871702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51871133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25935866 + 25935867.

It is an arithmetic number, because the mean of its divisors is an integer number (25935867).

Almost surely, 2^51871733 is an apocalyptic number.

It is an amenable number.

51871733 is a deficient number, since it is larger than the sum of its proper divisors (1).

51871733 is an equidigital number, since it uses as much as digits as its factorization.

51871733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 35.

The square root of 51871733 is about 7202.2033434221. The cubic root of 51871733 is about 372.9439668385.

The spelling of 51871733 in words is "fifty-one million, eight hundred seventy-one thousand, seven hundred thirty-three".