5571643 has 12 divisors (see below), whose sum is σ = 7071192. Its totient is φ = 4341120.

The previous prime is 5571637. The next prime is 5571649. The reversal of 5571643 is 3461755.

It is an interprime number because it is at equal distance from previous prime (5571637) and next prime (5571649).

It is not a de Polignac number, because 5571643 - 2⁹ = 5571131 is a prime.

It is a Duffinian number.

5571643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5571649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4630 + ... + 5707.

It is an arithmetic number, because the mean of its divisors is an integer number (589266).

Almost surely, 2^5571643 is an apocalyptic number.

5571643 is a deficient number, since it is larger than the sum of its proper divisors (1499549).

5571643 is a wasteful number, since it uses less digits than its factorization.

5571643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10362 (or 10355 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 5571643 is about 2360.4327992976. The cubic root of 5571643 is about 177.2805513890.

The spelling of 5571643 in words is "five million, five hundred seventy-one thousand, six hundred forty-three".