257275463 has 2 divisors, whose sum is σ = 257275464. Its totient is φ = 257275462.

The previous prime is 257275427. The next prime is 257275477. The reversal of 257275463 is 364572752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257275463 - 2¹⁸ = 257013319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257275463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257275363) 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, 128637731 + 128637732.

It is an arithmetic number, because the mean of its divisors is an integer number (128637732).

Almost surely, 2^257275463 is an apocalyptic number.

257275463 is a deficient number, since it is larger than the sum of its proper divisors (1).

257275463 is an equidigital number, since it uses as much as digits as its factorization.

257275463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 41.

The square root of 257275463 is about 16039.8086958667. The cubic root of 257275463 is about 636.0131906274.

The spelling of 257275463 in words is "two hundred fifty-seven million, two hundred seventy-five thousand, four hundred sixty-three".