487117217 has 2 divisors, whose sum is σ = 487117218. Its totient is φ = 487117216.

The previous prime is 487117199. The next prime is 487117261. The reversal of 487117217 is 712711784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412536721 + 74580496 = 20311^2 + 8636^2 .

It is a cyclic number.

It is not a de Polignac number, because 487117217 - 2⁸ = 487116961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (487167217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243558608 + 243558609.

It is an arithmetic number, because the mean of its divisors is an integer number (243558609).

Almost surely, 2^487117217 is an apocalyptic number.

It is an amenable number.

487117217 is a deficient number, since it is larger than the sum of its proper divisors (1).

487117217 is an equidigital number, since it uses as much as digits as its factorization.

487117217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21952, while the sum is 38.

The square root of 487117217 is about 22070.7321355681. The cubic root of 487117217 is about 786.8244133487.

The spelling of 487117217 in words is "four hundred eighty-seven million, one hundred seventeen thousand, two hundred seventeen".