51306683 has 2 divisors, whose sum is σ = 51306684. Its totient is φ = 51306682.

The previous prime is 51306649. The next prime is 51306719. The reversal of 51306683 is 38660315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51306683 - 2⁸ = 51306427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51306623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25653341 + 25653342.

It is an arithmetic number, because the mean of its divisors is an integer number (25653342).

Almost surely, 2^51306683 is an apocalyptic number.

51306683 is a deficient number, since it is larger than the sum of its proper divisors (1).

51306683 is an equidigital number, since it uses as much as digits as its factorization.

51306683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 51306683 is about 7162.8683500397. The cubic root of 51306683 is about 371.5848332997.

Adding to 51306683 its reverse (38660315), we get a palindrome (89966998).

The spelling of 51306683 in words is "fifty-one million, three hundred six thousand, six hundred eighty-three".