257740601 has 2 divisors, whose sum is σ = 257740602. Its totient is φ = 257740600.

The previous prime is 257740597. The next prime is 257740657. The reversal of 257740601 is 106047752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221980201 + 35760400 = 14899^2 + 5980^2 .

It is a cyclic number.

It is not a de Polignac number, because 257740601 - 2² = 257740597 is a prime.

It is not a weakly prime, because it can be changed into another prime (257742601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128870300 + 128870301.

It is an arithmetic number, because the mean of its divisors is an integer number (128870301).

Almost surely, 2^257740601 is an apocalyptic number.

It is an amenable number.

257740601 is a deficient number, since it is larger than the sum of its proper divisors (1).

257740601 is an equidigital number, since it uses as much as digits as its factorization.

257740601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 257740601 is about 16054.3016353873. The cubic root of 257740601 is about 636.3962506049.

The spelling of 257740601 in words is "two hundred fifty-seven million, seven hundred forty thousand, six hundred one".