51706943 has 2 divisors, whose sum is σ = 51706944. Its totient is φ = 51706942.

The previous prime is 51706937. The next prime is 51706973. The reversal of 51706943 is 34960715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51706943 - 2¹⁰ = 51705919 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51706973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25853471 + 25853472.

It is an arithmetic number, because the mean of its divisors is an integer number (25853472).

Almost surely, 2^51706943 is an apocalyptic number.

51706943 is a deficient number, since it is larger than the sum of its proper divisors (1).

51706943 is an equidigital number, since it uses as much as digits as its factorization.

51706943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 51706943 is about 7190.7539938452. The cubic root of 51706943 is about 372.5486157889.

The spelling of 51706943 in words is "fifty-one million, seven hundred six thousand, nine hundred forty-three".