655171 has 4 divisors (see below), whose sum is σ = 714744. Its totient is φ = 595600.

The previous prime is 655157. The next prime is 655181. The reversal of 655171 is 171556.

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 655171 - 2⁷ = 655043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29770 + ... + 29791.

It is an arithmetic number, because the mean of its divisors is an integer number (178686).

2⁶⁵⁵¹⁷¹ is an apocalyptic number.

655171 is a deficient number, since it is larger than the sum of its proper divisors (59573).

655171 is a wasteful number, since it uses less digits than its factorization.

655171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59572.

The product of its digits is 1050, while the sum is 25.

The square root of 655171 is about 809.4263400705. The cubic root of 655171 is about 86.8530129131.

The spelling of 655171 in words is "six hundred fifty-five thousand, one hundred seventy-one".