852547861 has 4 divisors (see below), whose sum is σ = 930052224. Its totient is φ = 775043500.

The previous prime is 852547853. The next prime is 852547873. The reversal of 852547861 is 168745258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 852547861 - 2³ = 852547853 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 (852547361) 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, 38752165 + ... + 38752186.

It is an arithmetic number, because the mean of its divisors is an integer number (232513056).

Almost surely, 2^852547861 is an apocalyptic number.

It is an amenable number.

852547861 is a deficient number, since it is larger than the sum of its proper divisors (77504363).

852547861 is a wasteful number, since it uses less digits than its factorization.

852547861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77504362.

The product of its digits is 537600, while the sum is 46.

The square root of 852547861 is about 29198.4222347715. The cubic root of 852547861 is about 948.2137667242.

The spelling of 852547861 in words is "eight hundred fifty-two million, five hundred forty-seven thousand, eight hundred sixty-one".