51680477 has 2 divisors, whose sum is σ = 51680478. Its totient is φ = 51680476.

The previous prime is 51680467. The next prime is 51680521. The reversal of 51680477 is 77408615.

51680477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50779876 + 900601 = 7126^2 + 949^2 .

It is a cyclic number.

It is not a de Polignac number, because 51680477 - 2⁶ = 51680413 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51680477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51680467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25840238 + 25840239.

It is an arithmetic number, because the mean of its divisors is an integer number (25840239).

Almost surely, 2^51680477 is an apocalyptic number.

It is an amenable number.

51680477 is a deficient number, since it is larger than the sum of its proper divisors (1).

51680477 is an equidigital number, since it uses as much as digits as its factorization.

51680477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 51680477 is about 7188.9134784055. The cubic root of 51680477 is about 372.4850424155.

The spelling of 51680477 in words is "fifty-one million, six hundred eighty thousand, four hundred seventy-seven".