4085281 has 8 divisors (see below), whose sum is σ = 4299624. Its totient is φ = 3876480.

The previous prime is 4085267. The next prime is 4085309. The reversal of 4085281 is 1825804.

4085281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 341056 + 3744225 = 584^2 + 1935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4085281 - 2¹⁵ = 4052513 is a prime.

It is a super-2 number, since 2×4085281² = 33379041697922, which contains 22 as substring.

It is a Duffinian number.

4085281 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4085261) 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 in 7 ways as a sum of consecutive naturals, for example, 171 + ... + 2863.

It is an arithmetic number, because the mean of its divisors is an integer number (537453).

Almost surely, 2^4085281 is an apocalyptic number.

4085281 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4085281 is a deficient number, since it is larger than the sum of its proper divisors (214343).

4085281 is a wasteful number, since it uses less digits than its factorization.

4085281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 4085281 is about 2021.2078072281. The cubic root of 4085281 is about 159.8603077610.

The spelling of 4085281 in words is "four million, eighty-five thousand, two hundred eighty-one".