4047257 has 2 divisors, whose sum is σ = 4047258. Its totient is φ = 4047256.

The previous prime is 4047157. The next prime is 4047271. The reversal of 4047257 is 7527404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 3136 = 2011^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 4047257 - 2¹⁰ = 4046233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4047157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2023628 + 2023629.

It is an arithmetic number, because the mean of its divisors is an integer number (2023629).

Almost surely, 2^4047257 is an apocalyptic number.

It is an amenable number.

4047257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4047257 is an equidigital number, since it uses as much as digits as its factorization.

4047257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 4047257 is about 2011.7795604887. The cubic root of 4047257 is about 159.3627911704.

The spelling of 4047257 in words is "four million, forty-seven thousand, two hundred fifty-seven".