17390081 has 2 divisors, whose sum is σ = 17390082. Its totient is φ = 17390080.

The previous prime is 17390071. The next prime is 17390083. The reversal of 17390081 is 18009371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14554225 + 2835856 = 3815^2 + 1684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17390081 is a prime.

It is a super-2 number, since 2×17390081² = 604829834373122, which contains 22 as substring.

Together with 17390083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17390083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8695040 + 8695041.

It is an arithmetic number, because the mean of its divisors is an integer number (8695041).

Almost surely, 2^17390081 is an apocalyptic number.

It is an amenable number.

17390081 is a deficient number, since it is larger than the sum of its proper divisors (1).

17390081 is an equidigital number, since it uses as much as digits as its factorization.

17390081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 17390081 is about 4170.1416043103. The cubic root of 17390081 is about 259.0799880154.

The spelling of 17390081 in words is "seventeen million, three hundred ninety thousand, eighty-one".