856151271 has 6 divisors (see below), whose sum is σ = 1236662960. Its totient is φ = 570767508.

The previous prime is 856151269. The next prime is 856151293. The reversal of 856151271 is 172151658.

856151271 is a `hidden beast` number, since 85 + 61 + 512 + 7 + 1 = 666.

It is not a de Polignac number, because 856151271 - 2¹ = 856151269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856151071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47563951 + ... + 47563968.

Almost surely, 2^856151271 is an apocalyptic number.

856151271 is a deficient number, since it is larger than the sum of its proper divisors (380511689).

856151271 is a wasteful number, since it uses less digits than its factorization.

856151271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95127925 (or 95127922 counting only the distinct ones).

The product of its digits is 16800, while the sum is 36.

The square root of 856151271 is about 29260.0627306231. The cubic root of 856151271 is about 949.5478073239.

The spelling of 856151271 in words is "eight hundred fifty-six million, one hundred fifty-one thousand, two hundred seventy-one".