855229 has 2 divisors, whose sum is σ = 855230. Its totient is φ = 855228.

The previous prime is 855221. The next prime is 855241. The reversal of 855229 is 922558.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458329 + 396900 = 677^2 + 630^2 .

It is a cyclic number.

It is not a de Polignac number, because 855229 - 2³ = 855221 is a prime.

855229 is a lucky number.

It is equal to p₆₇₉₉₀ and since 855229 and 67990 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 855229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855221) 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, 427614 + 427615.

It is an arithmetic number, because the mean of its divisors is an integer number (427615).

2⁸⁵⁵²²⁹ is an apocalyptic number.

It is an amenable number.

855229 is a deficient number, since it is larger than the sum of its proper divisors (1).

855229 is an equidigital number, since it uses as much as digits as its factorization.

855229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The square root of 855229 is about 924.7859211731. The cubic root of 855229 is about 94.9206724667.

The spelling of 855229 in words is "eight hundred fifty-five thousand, two hundred twenty-nine".