51302687 has 2 divisors, whose sum is σ = 51302688. Its totient is φ = 51302686.

The previous prime is 51302677. The next prime is 51302707. The reversal of 51302687 is 78620315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51302687 - 2⁶ = 51302623 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 (51302677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25651343 + 25651344.

It is an arithmetic number, because the mean of its divisors is an integer number (25651344).

Almost surely, 2^51302687 is an apocalyptic number.

51302687 is a deficient number, since it is larger than the sum of its proper divisors (1).

51302687 is an equidigital number, since it uses as much as digits as its factorization.

51302687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 51302687 is about 7162.5894060738. The cubic root of 51302687 is about 371.5751861383.

The spelling of 51302687 in words is "fifty-one million, three hundred two thousand, six hundred eighty-seven".