487818257 has 2 divisors, whose sum is σ = 487818258. Its totient is φ = 487818256.

The previous prime is 487818241. The next prime is 487818259. The reversal of 487818257 is 752818784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382632721 + 105185536 = 19561^2 + 10256^2 .

It is a cyclic number.

It is not a de Polignac number, because 487818257 - 2⁴ = 487818241 is a prime.

Together with 487818259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (487818259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243909128 + 243909129.

It is an arithmetic number, because the mean of its divisors is an integer number (243909129).

Almost surely, 2^487818257 is an apocalyptic number.

It is an amenable number.

487818257 is a deficient number, since it is larger than the sum of its proper divisors (1).

487818257 is an equidigital number, since it uses as much as digits as its factorization.

487818257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1003520, while the sum is 50.

The square root of 487818257 is about 22086.6080917827. The cubic root of 487818257 is about 787.2016880357.

The spelling of 487818257 in words is "four hundred eighty-seven million, eight hundred eighteen thousand, two hundred fifty-seven".