851912271 has 48 divisors (see below), whose sum is σ = 1482743808. Its totient is φ = 461030400.

The previous prime is 851912267. The next prime is 851912293. The reversal of 851912271 is 172219158.

It is a happy number.

It is not a de Polignac number, because 851912271 - 2² = 851912267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851912251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87151 + ... + 96431.

It is an arithmetic number, because the mean of its divisors is an integer number (30890496).

Almost surely, 2^851912271 is an apocalyptic number.

851912271 is a deficient number, since it is larger than the sum of its proper divisors (630831537).

851912271 is a wasteful number, since it uses less digits than its factorization.

851912271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9372 (or 9369 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 851912271 is about 29187.5362269582. The cubic root of 851912271 is about 947.9780712494.

The spelling of 851912271 in words is "eight hundred fifty-one million, nine hundred twelve thousand, two hundred seventy-one".