257233271 has 4 divisors (see below), whose sum is σ = 257576544. Its totient is φ = 256890000.

The previous prime is 257233259. The next prime is 257233283. The reversal of 257233271 is 172332752.

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

It is an interprime number because it is at equal distance from previous prime (257233259) and next prime (257233283).

It is a cyclic number.

It is not a de Polignac number, because 257233271 - 2¹⁰ = 257232247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257233201) 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, 170510 + ... + 172011.

It is an arithmetic number, because the mean of its divisors is an integer number (64394136).

Almost surely, 2^257233271 is an apocalyptic number.

257233271 is a deficient number, since it is larger than the sum of its proper divisors (343273).

257233271 is an equidigital number, since it uses as much as digits as its factorization.

257233271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343272.

The product of its digits is 17640, while the sum is 32.

The square root of 257233271 is about 16038.4934142830. The cubic root of 257233271 is about 635.9784209745.

The spelling of 257233271 in words is "two hundred fifty-seven million, two hundred thirty-three thousand, two hundred seventy-one".