852135971 has 4 divisors (see below), whose sum is σ = 881520000. Its totient is φ = 822751944.

The previous prime is 852135953. The next prime is 852135989. The reversal of 852135971 is 179531258.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (852135953) and next prime (852135989).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-852135971 is a prime.

It is a super-2 number, since 2×852135971² = 1452271426144225682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (852135871) 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, 14691971 + ... + 14692028.

It is an arithmetic number, because the mean of its divisors is an integer number (220380000).

Almost surely, 2^852135971 is an apocalyptic number.

852135971 is a deficient number, since it is larger than the sum of its proper divisors (29384029).

852135971 is a wasteful number, since it uses less digits than its factorization.

852135971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29384028.

The product of its digits is 75600, while the sum is 41.

The square root of 852135971 is about 29191.3680905846. The cubic root of 852135971 is about 948.0610391570.

The spelling of 852135971 in words is "eight hundred fifty-two million, one hundred thirty-five thousand, nine hundred seventy-one".