8040257 has 2 divisors, whose sum is σ = 8040258. Its totient is φ = 8040256.

The previous prime is 8040247. The next prime is 8040311. The reversal of 8040257 is 7520408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4946176 + 3094081 = 2224^2 + 1759^2 .

It is a cyclic number.

It is not a de Polignac number, because 8040257 - 2¹⁰ = 8039233 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8040217) 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, 4020128 + 4020129.

It is an arithmetic number, because the mean of its divisors is an integer number (4020129).

Almost surely, 2^8040257 is an apocalyptic number.

It is an amenable number.

8040257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8040257 is an equidigital number, since it uses as much as digits as its factorization.

8040257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 8040257 is about 2835.5346938452. The cubic root of 8040257 is about 200.3349138505.

The spelling of 8040257 in words is "eight million, forty thousand, two hundred fifty-seven".