655271 has 4 divisors (see below), whose sum is σ = 660192. Its totient is φ = 650352.

The previous prime is 655267. The next prime is 655273. The reversal of 655271 is 172556.

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 655271 - 2² = 655267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 655271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655273) 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, 2255 + ... + 2528.

It is an arithmetic number, because the mean of its divisors is an integer number (165048).

2⁶⁵⁵²⁷¹ is an apocalyptic number.

655271 is a deficient number, since it is larger than the sum of its proper divisors (4921).

655271 is a wasteful number, since it uses less digits than its factorization.

655271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920.

The product of its digits is 2100, while the sum is 26.

The square root of 655271 is about 809.4881098571. The cubic root of 655271 is about 86.8574315353.

The spelling of 655271 in words is "six hundred fifty-five thousand, two hundred seventy-one".