104287217 has 2 divisors, whose sum is σ = 104287218. Its totient is φ = 104287216.

The previous prime is 104287187. The next prime is 104287223. The reversal of 104287217 is 712782401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55413136 + 48874081 = 7444^2 + 6991^2 .

It is a cyclic number.

It is not a de Polignac number, because 104287217 - 2⁶ = 104287153 is a prime.

It is not a weakly prime, because it can be changed into another prime (104287297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52143608 + 52143609.

It is an arithmetic number, because the mean of its divisors is an integer number (52143609).

Almost surely, 2^104287217 is an apocalyptic number.

It is an amenable number.

104287217 is a deficient number, since it is larger than the sum of its proper divisors (1).

104287217 is an equidigital number, since it uses as much as digits as its factorization.

104287217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 104287217 is about 10212.1112900320. Note that the first 3 decimals coincide. The cubic root of 104287217 is about 470.6994519981.

The spelling of 104287217 in words is "one hundred four million, two hundred eighty-seven thousand, two hundred seventeen".