257074043 has 2 divisors, whose sum is σ = 257074044. Its totient is φ = 257074042.

The previous prime is 257074001. The next prime is 257074057. The reversal of 257074043 is 340470752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257074043 - 2²⁰ = 256025467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (257074063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128537021 + 128537022.

It is an arithmetic number, because the mean of its divisors is an integer number (128537022).

Almost surely, 2^257074043 is an apocalyptic number.

257074043 is a deficient number, since it is larger than the sum of its proper divisors (1).

257074043 is an equidigital number, since it uses as much as digits as its factorization.

257074043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 257074043 is about 16033.5287132933. The cubic root of 257074043 is about 635.8471698429.

The spelling of 257074043 in words is "two hundred fifty-seven million, seventy-four thousand, forty-three".