852506 has 4 divisors (see below), whose sum is σ = 1278762. Its totient is φ = 426252.

The previous prime is 852463. The next prime is 852521. The reversal of 852506 is 605258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605258 = 2 ⋅302629.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 198025 = 809^2 + 445^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213125 + ... + 213128.

2⁸⁵²⁵⁰⁶ is an apocalyptic number.

852506 is a deficient number, since it is larger than the sum of its proper divisors (426256).

852506 is a wasteful number, since it uses less digits than its factorization.

852506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426255.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 852506 is about 923.3125148074. The cubic root of 852506 is about 94.8198247038.

The spelling of 852506 in words is "eight hundred fifty-two thousand, five hundred six".