51508679 has 2 divisors, whose sum is σ = 51508680. Its totient is φ = 51508678.

The previous prime is 51508631. The next prime is 51508703. The reversal of 51508679 is 97680515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51508679 - 2¹⁶ = 51443143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51508579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25754339 + 25754340.

It is an arithmetic number, because the mean of its divisors is an integer number (25754340).

Almost surely, 2^51508679 is an apocalyptic number.

51508679 is a deficient number, since it is larger than the sum of its proper divisors (1).

51508679 is an equidigital number, since it uses as much as digits as its factorization.

51508679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 51508679 is about 7176.9547163125. The cubic root of 51508679 is about 372.0718417343.

The spelling of 51508679 in words is "fifty-one million, five hundred eight thousand, six hundred seventy-nine".