8190257 has 2 divisors, whose sum is σ = 8190258. Its totient is φ = 8190256.

The previous prime is 8190233. The next prime is 8190331. The reversal of 8190257 is 7520918.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5973136 + 2217121 = 2444^2 + 1489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8190257 is a prime.

It is not a weakly prime, because it can be changed into another prime (8190227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4095128 + 4095129.

It is an arithmetic number, because the mean of its divisors is an integer number (4095129).

Almost surely, 2^8190257 is an apocalyptic number.

It is an amenable number.

8190257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8190257 is an equidigital number, since it uses as much as digits as its factorization.

8190257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 8190257 is about 2861.8625054324. The cubic root of 8190257 is about 201.5730698181.

The spelling of 8190257 in words is "eight million, one hundred ninety thousand, two hundred fifty-seven".