8102257 has 2 divisors, whose sum is σ = 8102258. Its totient is φ = 8102256.

The previous prime is 8102221. The next prime is 8102287. The reversal of 8102257 is 7522018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8071281 + 30976 = 2841^2 + 176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8102257 is a prime.

It is not a weakly prime, because it can be changed into another prime (8102287) 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, 4051128 + 4051129.

It is an arithmetic number, because the mean of its divisors is an integer number (4051129).

Almost surely, 2^8102257 is an apocalyptic number.

It is an amenable number.

8102257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8102257 is an equidigital number, since it uses as much as digits as its factorization.

8102257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 8102257 is about 2846.4463810162. The cubic root of 8102257 is about 200.8485365044.

The spelling of 8102257 in words is "eight million, one hundred two thousand, two hundred fifty-seven".