8573281 has 4 divisors (see below), whose sum is σ = 8669700. Its totient is φ = 8476864.

The previous prime is 8573269. The next prime is 8573293. The reversal of 8573281 is 1823758.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1823758 = 2 ⋅911879.

It is an interprime number because it is at equal distance from previous prime (8573269) and next prime (8573293).

It can be written as a sum of positive squares in 2 ways, for example, as 2298256 + 6275025 = 1516^2 + 2505^2 .

It is a cyclic number.

It is not a de Polignac number, because 8573281 - 2⁵ = 8573249 is a prime.

It is a super-2 number, since 2×8573281² = 147002294209922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8573221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48076 + ... + 48253.

It is an arithmetic number, because the mean of its divisors is an integer number (2167425).

Almost surely, 2^8573281 is an apocalyptic number.

It is an amenable number.

8573281 is a deficient number, since it is larger than the sum of its proper divisors (96419).

8573281 is an equidigital number, since it uses as much as digits as its factorization.

8573281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96418.

The product of its digits is 13440, while the sum is 34.

The square root of 8573281 is about 2928.0165641608. The cubic root of 8573281 is about 204.6675635187.

The spelling of 8573281 in words is "eight million, five hundred seventy-three thousand, two hundred eighty-one".