17491049 has 2 divisors, whose sum is σ = 17491050. Its totient is φ = 17491048.

The previous prime is 17491043. The next prime is 17491073. The reversal of 17491049 is 94019471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12201049 + 5290000 = 3493^2 + 2300^2 .

It is a cyclic number.

It is not a de Polignac number, because 17491049 - 2⁸ = 17490793 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (17491043) 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, 8745524 + 8745525.

It is an arithmetic number, because the mean of its divisors is an integer number (8745525).

Almost surely, 2^17491049 is an apocalyptic number.

It is an amenable number.

17491049 is a deficient number, since it is larger than the sum of its proper divisors (1).

17491049 is an equidigital number, since it uses as much as digits as its factorization.

17491049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 17491049 is about 4182.2301467040. The cubic root of 17491049 is about 259.5804327676.

The spelling of 17491049 in words is "seventeen million, four hundred ninety-one thousand, forty-nine".