2817081 has 6 divisors (see below), whose sum is σ = 4069130. Its totient is φ = 1878048.

The previous prime is 2817079. The next prime is 2817083. The reversal of 2817081 is 1807182.

It is an interprime number because it is at equal distance from previous prime (2817079) and next prime (2817083).

It can be written as a sum of positive squares in only one way, i.e., 2509056 + 308025 = 1584^2 + 555^2 .

It is not a de Polignac number, because 2817081 - 2¹ = 2817079 is a prime.

It is a super-2 number, since 2×2817081² = 15871890721122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

2817081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2817083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156496 + ... + 156513.

2^2817081 is an apocalyptic number.

It is an amenable number.

2817081 is a deficient number, since it is larger than the sum of its proper divisors (1252049).

2817081 is a wasteful number, since it uses less digits than its factorization.

2817081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313015 (or 313012 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 2817081 is about 1678.4162177481. The cubic root of 2817081 is about 141.2320007346.

The spelling of 2817081 in words is "two million, eight hundred seventeen thousand, eighty-one".