16850257 has 2 divisors, whose sum is σ = 16850258. Its totient is φ = 16850256.

The previous prime is 16850243. The next prime is 16850263. The reversal of 16850257 is 75205861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10342656 + 6507601 = 3216^2 + 2551^2 .

It is an emirp because it is prime and its reverse (75205861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16850257 - 2⁷ = 16850129 is a prime.

It is not a weakly prime, because it can be changed into another prime (16850227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8425128 + 8425129.

It is an arithmetic number, because the mean of its divisors is an integer number (8425129).

Almost surely, 2^16850257 is an apocalyptic number.

It is an amenable number.

16850257 is a deficient number, since it is larger than the sum of its proper divisors (1).

16850257 is an equidigital number, since it uses as much as digits as its factorization.

16850257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 16850257 is about 4104.9064544762. The cubic root of 16850257 is about 256.3709679105.

The spelling of 16850257 in words is "sixteen million, eight hundred fifty thousand, two hundred fifty-seven".