6556171 has 4 divisors (see below), whose sum is σ = 6695712. Its totient is φ = 6416632.

The previous prime is 6556111. The next prime is 6556201. The reversal of 6556171 is 1716556.

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 6556171 - 2¹¹ = 6554123 is a prime.

It is a Duffinian number.

6556171 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6556111) 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, 69700 + ... + 69793.

It is an arithmetic number, because the mean of its divisors is an integer number (1673928).

Almost surely, 2^6556171 is an apocalyptic number.

6556171 is a deficient number, since it is larger than the sum of its proper divisors (139541).

6556171 is a wasteful number, since it uses less digits than its factorization.

6556171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139540.

The product of its digits is 6300, while the sum is 31.

The square root of 6556171 is about 2560.5020991985. The cubic root of 6556171 is about 187.1616035619.

The spelling of 6556171 in words is "six million, five hundred fifty-six thousand, one hundred seventy-one".