257016271 has 4 divisors (see below), whose sum is σ = 257290344. Its totient is φ = 256742200.

The previous prime is 257016269. The next prime is 257016293. The reversal of 257016271 is 172610752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257016271 - 2¹ = 257016269 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257046271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135625 + ... + 137506.

It is an arithmetic number, because the mean of its divisors is an integer number (64322586).

Almost surely, 2^257016271 is an apocalyptic number.

257016271 is a deficient number, since it is larger than the sum of its proper divisors (274073).

257016271 is an equidigital number, since it uses as much as digits as its factorization.

257016271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274072.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 257016271 is about 16031.7270123964. The cubic root of 257016271 is about 635.7995351688.

The spelling of 257016271 in words is "two hundred fifty-seven million, sixteen thousand, two hundred seventy-one".