851041 has 2 divisors, whose sum is σ = 851042. Its totient is φ = 851040.

The previous prime is 851033. The next prime is 851051. The reversal of 851041 is 140158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772641 + 78400 = 879^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 851041 - 2³ = 851033 is a prime.

It is not a weakly prime, because it can be changed into another prime (851051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425520 + 425521.

It is an arithmetic number, because the mean of its divisors is an integer number (425521).

2⁸⁵¹⁰⁴¹ is an apocalyptic number.

It is an amenable number.

851041 is a deficient number, since it is larger than the sum of its proper divisors (1).

851041 is an equidigital number, since it uses as much as digits as its factorization.

851041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 851041 is about 922.5188344961. The cubic root of 851041 is about 94.7654787753.

Adding to 851041 its reverse (140158), we get a palindrome (991199).

The spelling of 851041 in words is "eight hundred fifty-one thousand, forty-one".