16071217 has 2 divisors, whose sum is σ = 16071218. Its totient is φ = 16071216.

The previous prime is 16071179. The next prime is 16071229. The reversal of 16071217 is 71217061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15492096 + 579121 = 3936^2 + 761^2 .

It is an emirp because it is prime and its reverse (71217061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16071217 is a prime.

It is a super-2 number, since 2×16071217² = 516568031722178, which contains 22 as substring.

It is equal to p_1035385 and since 16071217 and 1035385 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 16071191 and 16071200.

It is not a weakly prime, because it can be changed into another prime (16071247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8035608 + 8035609.

It is an arithmetic number, because the mean of its divisors is an integer number (8035609).

Almost surely, 2^16071217 is an apocalyptic number.

It is an amenable number.

16071217 is a deficient number, since it is larger than the sum of its proper divisors (1).

16071217 is an equidigital number, since it uses as much as digits as its factorization.

16071217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 16071217 is about 4008.8922410062. The cubic root of 16071217 is about 252.3575224691.

Adding to 16071217 its reverse (71217061), we get a palindrome (87288278).

The spelling of 16071217 in words is "sixteen million, seventy-one thousand, two hundred seventeen".