5643271 has 4 divisors (see below), whose sum is σ = 5825344. Its totient is φ = 5461200.

The previous prime is 5643263. The next prime is 5643301. The reversal of 5643271 is 1723465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1723465 = 5 ⋅344693.

It is a cyclic number.

It is not a de Polignac number, because 5643271 - 2³ = 5643263 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 (5643221) 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, 90990 + ... + 91051.

It is an arithmetic number, because the mean of its divisors is an integer number (1456336).

Almost surely, 2^5643271 is an apocalyptic number.

5643271 is a deficient number, since it is larger than the sum of its proper divisors (182073).

5643271 is a wasteful number, since it uses less digits than its factorization.

5643271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182072.

The product of its digits is 5040, while the sum is 28.

The square root of 5643271 is about 2375.5569873190. The cubic root of 5643271 is about 178.0370141433.

The spelling of 5643271 in words is "five million, six hundred forty-three thousand, two hundred seventy-one".