248171849 has 2 divisors, whose sum is σ = 248171850. Its totient is φ = 248171848.

The previous prime is 248171827. The next prime is 248171873. The reversal of 248171849 is 948171842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156625225 + 91546624 = 12515^2 + 9568^2 .

It is a cyclic number.

It is not a de Polignac number, because 248171849 - 2¹² = 248167753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (248171809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124085924 + 124085925.

It is an arithmetic number, because the mean of its divisors is an integer number (124085925).

Almost surely, 2^248171849 is an apocalyptic number.

It is an amenable number.

248171849 is a deficient number, since it is larger than the sum of its proper divisors (1).

248171849 is an equidigital number, since it uses as much as digits as its factorization.

248171849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 248171849 is about 15753.4710143511. The cubic root of 248171849 is about 628.4212160909.

The spelling of 248171849 in words is "two hundred forty-eight million, one hundred seventy-one thousand, eight hundred forty-nine".