247271 has 8 divisors (see below), whose sum is σ = 261744. Its totient is φ = 233280.

The previous prime is 247259. The next prime is 247279. The reversal of 247271 is 172742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 247271 - 2¹⁰ = 246247 is a prime.

It is a super-2 number, since 2×247271² = 122285894882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436 + ... + 1598.

It is an arithmetic number, because the mean of its divisors is an integer number (32718).

2²⁴⁷²⁷¹ is an apocalyptic number.

247271 is a deficient number, since it is larger than the sum of its proper divisors (14473).

247271 is a wasteful number, since it uses less digits than its factorization.

247271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241.

The product of its digits is 784, while the sum is 23.

The square root of 247271 is about 497.2635116314. The cubic root of 247271 is about 62.7659917020.

Subtracting from 247271 its reverse (172742), we obtain a square (74529 = 273²).

The spelling of 247271 in words is "two hundred forty-seven thousand, two hundred seventy-one", and thus it is an iban number.