51706873 has 2 divisors, whose sum is σ = 51706874. Its totient is φ = 51706872.

The previous prime is 51706861. The next prime is 51706883. The reversal of 51706873 is 37860715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51079609 + 627264 = 7147^2 + 792^2 .

It is a cyclic number.

It is not a de Polignac number, because 51706873 - 2¹⁷ = 51575801 is a prime.

It is not a weakly prime, because it can be changed into another prime (51706883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25853436 + 25853437.

It is an arithmetic number, because the mean of its divisors is an integer number (25853437).

Almost surely, 2^51706873 is an apocalyptic number.

It is an amenable number.

51706873 is a deficient number, since it is larger than the sum of its proper divisors (1).

51706873 is an equidigital number, since it uses as much as digits as its factorization.

51706873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 51706873 is about 7190.7491264819. The cubic root of 51706873 is about 372.5484476721.

The spelling of 51706873 in words is "fifty-one million, seven hundred six thousand, eight hundred seventy-three".