17256401 has 2 divisors, whose sum is σ = 17256402. Its totient is φ = 17256400.

The previous prime is 17256353. The next prime is 17256413. The reversal of 17256401 is 10465271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17230801 + 25600 = 4151^2 + 160^2 .

It is an emirp because it is prime and its reverse (10465271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17256401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17256461) 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, 8628200 + 8628201.

It is an arithmetic number, because the mean of its divisors is an integer number (8628201).

Almost surely, 2^17256401 is an apocalyptic number.

It is an amenable number.

17256401 is a deficient number, since it is larger than the sum of its proper divisors (1).

17256401 is an equidigital number, since it uses as much as digits as its factorization.

17256401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 17256401 is about 4154.0824498317. The cubic root of 17256401 is about 258.4144182049.

The spelling of 17256401 in words is "seventeen million, two hundred fifty-six thousand, four hundred one".