130566217 has 2 divisors, whose sum is σ = 130566218. Its totient is φ = 130566216.

The previous prime is 130566211. The next prime is 130566251. The reversal of 130566217 is 712665031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95472441 + 35093776 = 9771^2 + 5924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130566217 is a prime.

It is not a weakly prime, because it can be changed into another prime (130566211) 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, 65283108 + 65283109.

It is an arithmetic number, because the mean of its divisors is an integer number (65283109).

Almost surely, 2^130566217 is an apocalyptic number.

It is an amenable number.

130566217 is a deficient number, since it is larger than the sum of its proper divisors (1).

130566217 is an equidigital number, since it uses as much as digits as its factorization.

130566217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 130566217 is about 11426.5575305951. The cubic root of 130566217 is about 507.3141085950.

The spelling of 130566217 in words is "one hundred thirty million, five hundred sixty-six thousand, two hundred seventeen".