555000217 has 2 divisors, whose sum is σ = 555000218. Its totient is φ = 555000216.

The previous prime is 555000191. The next prime is 555000283. The reversal of 555000217 is 712000555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528126361 + 26873856 = 22981^2 + 5184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-555000217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 555000191 and 555000200.

It is not a weakly prime, because it can be changed into another prime (555000917) 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, 277500108 + 277500109.

It is an arithmetic number, because the mean of its divisors is an integer number (277500109).

Almost surely, 2^555000217 is an apocalyptic number.

It is an amenable number.

555000217 is a deficient number, since it is larger than the sum of its proper divisors (1).

555000217 is an equidigital number, since it uses as much as digits as its factorization.

555000217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 555000217 is about 23558.4425843475. The cubic root of 555000217 is about 821.7966835927.

The spelling of 555000217 in words is "five hundred fifty-five million, two hundred seventeen", and thus it is an aban number.