858281 has 2 divisors, whose sum is σ = 858282. Its totient is φ = 858280.

The previous prime is 858269. The next prime is 858293. The reversal of 858281 is 182858.

It is a balanced prime because it is at equal distance from previous prime (858269) and next prime (858293).

It can be written as a sum of positive squares in only one way, i.e., 846400 + 11881 = 920^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 858281 - 2⁶ = 858217 is a prime.

It is a super-2 number, since 2×858281² = 1473292549922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (858241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429140 + 429141.

It is an arithmetic number, because the mean of its divisors is an integer number (429141).

2⁸⁵⁸²⁸¹ is an apocalyptic number.

It is an amenable number.

858281 is a deficient number, since it is larger than the sum of its proper divisors (1).

858281 is an equidigital number, since it uses as much as digits as its factorization.

858281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 32.

The square root of 858281 is about 926.4345632585. The cubic root of 858281 is about 95.0334508240.

The spelling of 858281 in words is "eight hundred fifty-eight thousand, two hundred eighty-one".