217559000531 has 2 divisors, whose sum is σ = 217559000532. Its totient is φ = 217559000530.

The previous prime is 217559000473. The next prime is 217559000579. The reversal of 217559000531 is 135000955712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 217559000531 - 2⁶ = 217559000467 is a prime.

It is a super-2 number, since 2×217559000531² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (217559006531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108779500265 + 108779500266.

It is an arithmetic number, because the mean of its divisors is an integer number (108779500266).

Almost surely, 2^217559000531 is an apocalyptic number.

217559000531 is a deficient number, since it is larger than the sum of its proper divisors (1).

217559000531 is an equidigital number, since it uses as much as digits as its factorization.

217559000531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47250, while the sum is 38.

The spelling of 217559000531 in words is "two hundred seventeen billion, five hundred fifty-nine million, five hundred thirty-one", and thus it is an aban number.