257271531353 has 2 divisors, whose sum is σ = 257271531354. Its totient is φ = 257271531352.

The previous prime is 257271531301. The next prime is 257271531371. The reversal of 257271531353 is 353135172752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251414996569 + 5856534784 = 501413^2 + 76528^2 .

It is a cyclic number.

It is not a de Polignac number, because 257271531353 - 2¹⁸ = 257271269209 is a prime.

It is not a weakly prime, because it can be changed into another prime (257271534353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128635765676 + 128635765677.

It is an arithmetic number, because the mean of its divisors is an integer number (128635765677).

Almost surely, 2^257271531353 is an apocalyptic number.

It is an amenable number.

257271531353 is a deficient number, since it is larger than the sum of its proper divisors (1).

257271531353 is an equidigital number, since it uses as much as digits as its factorization.

257271531353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 661500, while the sum is 44.

The spelling of 257271531353 in words is "two hundred fifty-seven billion, two hundred seventy-one million, five hundred thirty-one thousand, three hundred fifty-three".