257270873 has 2 divisors, whose sum is σ = 257270874. Its totient is φ = 257270872.

The previous prime is 257270837. The next prime is 257270917. The reversal of 257270873 is 378072752.

Together with previous prime (257270837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172869904 + 84400969 = 13148^2 + 9187^2 .

It is a cyclic number.

It is not a de Polignac number, because 257270873 - 2¹⁸ = 257008729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257270873.

It is not a weakly prime, because it can be changed into another prime (257270813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128635436 + 128635437.

It is an arithmetic number, because the mean of its divisors is an integer number (128635437).

Almost surely, 2^257270873 is an apocalyptic number.

It is an amenable number.

257270873 is a deficient number, since it is larger than the sum of its proper divisors (1).

257270873 is an equidigital number, since it uses as much as digits as its factorization.

257270873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 257270873 is about 16039.6656137215. The cubic root of 257270873 is about 636.0094082769.

The spelling of 257270873 in words is "two hundred fifty-seven million, two hundred seventy thousand, eight hundred seventy-three".