851059 has 4 divisors (see below), whose sum is σ = 928440. Its totient is φ = 773680.

The previous prime is 851057. The next prime is 851087. The reversal of 851059 is 950158.

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

It is a cyclic number.

It is not a de Polignac number, because 851059 - 2¹ = 851057 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (851051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38674 + ... + 38695.

It is an arithmetic number, because the mean of its divisors is an integer number (232110).

2⁸⁵¹⁰⁵⁹ is an apocalyptic number.

851059 is a deficient number, since it is larger than the sum of its proper divisors (77381).

851059 is a wasteful number, since it uses less digits than its factorization.

851059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77380.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 851059 is about 922.5285903429. The cubic root of 851059 is about 94.7661468851.

Subtracting 851059 from its reverse (950158), we obtain a palindrome (99099).

The spelling of 851059 in words is "eight hundred fifty-one thousand, fifty-nine".