51275687 has 2 divisors, whose sum is σ = 51275688. Its totient is φ = 51275686.

The previous prime is 51275681. The next prime is 51275713. The reversal of 51275687 is 78657215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51275687 - 2¹⁴ = 51259303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51275681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25637843 + 25637844.

It is an arithmetic number, because the mean of its divisors is an integer number (25637844).

Almost surely, 2^51275687 is an apocalyptic number.

51275687 is a deficient number, since it is larger than the sum of its proper divisors (1).

51275687 is an equidigital number, since it uses as much as digits as its factorization.

51275687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 41.

The square root of 51275687 is about 7160.7043647954. The cubic root of 51275687 is about 371.5099894847.

The spelling of 51275687 in words is "fifty-one million, two hundred seventy-five thousand, six hundred eighty-seven".