17016421 has 2 divisors, whose sum is σ = 17016422. Its totient is φ = 17016420.

The previous prime is 17016413. The next prime is 17016449. The reversal of 17016421 is 12461071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11189025 + 5827396 = 3345^2 + 2414^2 .

It is a cyclic number.

It is not a de Polignac number, because 17016421 - 2³ = 17016413 is a prime.

It is a Chen prime.

It is equal to p_1092325 and since 17016421 and 1092325 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 = 17016392 and 17016401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17016401) 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, 8508210 + 8508211.

It is an arithmetic number, because the mean of its divisors is an integer number (8508211).

Almost surely, 2^17016421 is an apocalyptic number.

It is an amenable number.

17016421 is a deficient number, since it is larger than the sum of its proper divisors (1).

17016421 is an equidigital number, since it uses as much as digits as its factorization.

17016421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 17016421 is about 4125.0964837201. The cubic root of 17016421 is about 257.2109226488.

Adding to 17016421 its reverse (12461071), we get a palindrome (29477492).

The spelling of 17016421 in words is "seventeen million, sixteen thousand, four hundred twenty-one".