17160421 has 2 divisors, whose sum is σ = 17160422. Its totient is φ = 17160420.

The previous prime is 17160383. The next prime is 17160443. The reversal of 17160421 is 12406171.

It is an a-pointer prime, because the next prime (17160443) can be obtained adding 17160421 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16900321 + 260100 = 4111^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 17160421 - 2¹³ = 17152229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17160392 and 17160401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17167421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8580210 + 8580211.

It is an arithmetic number, because the mean of its divisors is an integer number (8580211).

Almost surely, 2^17160421 is an apocalyptic number.

It is an amenable number.

17160421 is a deficient number, since it is larger than the sum of its proper divisors (1).

17160421 is an equidigital number, since it uses as much as digits as its factorization.

17160421 is an evil number, because the sum of its binary digits is even.

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

The square root of 17160421 is about 4142.5138503088. The cubic root of 17160421 is about 257.9344273795.

Adding to 17160421 its reverse (12406171), we get a palindrome (29566592).

The spelling of 17160421 in words is "seventeen million, one hundred sixty thousand, four hundred twenty-one".