852343257 has 4 divisors (see below), whose sum is σ = 1136457680. Its totient is φ = 568228836.

The previous prime is 852343253. The next prime is 852343277. The reversal of 852343257 is 752343258.

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 852343257 - 2² = 852343253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (852343253) 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, 142057207 + ... + 142057212.

It is an arithmetic number, because the mean of its divisors is an integer number (284114420).

Almost surely, 2^852343257 is an apocalyptic number.

It is an amenable number.

852343257 is a deficient number, since it is larger than the sum of its proper divisors (284114423).

852343257 is a wasteful number, since it uses less digits than its factorization.

852343257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284114422.

The product of its digits is 201600, while the sum is 39.

The square root of 852343257 is about 29194.9183420677. The cubic root of 852343257 is about 948.1379063295.

Subtracting from 852343257 its reverse (752343258), we obtain a palindrome (99999999).

The spelling of 852343257 in words is "eight hundred fifty-two million, three hundred forty-three thousand, two hundred fifty-seven".