51902497 has 2 divisors, whose sum is σ = 51902498. Its totient is φ = 51902496.

The previous prime is 51902449. The next prime is 51902503. The reversal of 51902497 is 79420915.

51902497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46185616 + 5716881 = 6796^2 + 2391^2 .

It is a cyclic number.

It is not a de Polignac number, because 51902497 - 2¹¹ = 51900449 is a prime.

It is not a weakly prime, because it can be changed into another prime (51902437) 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, 25951248 + 25951249.

It is an arithmetic number, because the mean of its divisors is an integer number (25951249).

Almost surely, 2^51902497 is an apocalyptic number.

It is an amenable number.

51902497 is a deficient number, since it is larger than the sum of its proper divisors (1).

51902497 is an equidigital number, since it uses as much as digits as its factorization.

51902497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 51902497 is about 7204.3387621627. The cubic root of 51902497 is about 373.0176805942.

The spelling of 51902497 in words is "fifty-one million, nine hundred two thousand, four hundred ninety-seven".