855271 has 2 divisors, whose sum is σ = 855272. Its totient is φ = 855270.

The previous prime is 855269. The next prime is 855277. The reversal of 855271 is 172558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855271 - 2¹ = 855269 is a prime.

Together with 855269, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427635 + 427636.

It is an arithmetic number, because the mean of its divisors is an integer number (427636).

2⁸⁵⁵²⁷¹ is an apocalyptic number.

855271 is a deficient number, since it is larger than the sum of its proper divisors (1).

855271 is an equidigital number, since it uses as much as digits as its factorization.

855271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2800, while the sum is 28.

The square root of 855271 is about 924.8086288525. The cubic root of 855271 is about 94.9222262817.

It can be divided in two parts, 85 and 5271, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 855271 in words is "eight hundred fifty-five thousand, two hundred seventy-one".