50720687 has 2 divisors, whose sum is σ = 50720688. Its totient is φ = 50720686.

The previous prime is 50720647. The next prime is 50720689. The reversal of 50720687 is 78602705.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50720687 is a prime.

Together with 50720689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50720689) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25360343 + 25360344.

It is an arithmetic number, because the mean of its divisors is an integer number (25360344).

Almost surely, 2^50720687 is an apocalyptic number.

50720687 is a deficient number, since it is larger than the sum of its proper divisors (1).

50720687 is an equidigital number, since it uses as much as digits as its factorization.

50720687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 50720687 is about 7121.8457579479. The cubic root of 50720687 is about 370.1647355067.

The spelling of 50720687 in words is "fifty million, seven hundred twenty thousand, six hundred eighty-seven".