3006181 has 4 divisors (see below), whose sum is σ = 3013164. Its totient is φ = 2999200.

The previous prime is 3006151. The next prime is 3006193. The reversal of 3006181 is 1816003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1816003 = 7 ⋅259429.

It can be written as a sum of positive squares in 2 ways, for example, as 1988100 + 1018081 = 1410^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 3006181 - 2¹⁵ = 2973413 is a prime.

It is a super-2 number, since 2×3006181² = 18074248409522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3006121) 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, 2800 + ... + 3721.

It is an arithmetic number, because the mean of its divisors is an integer number (753291).

Almost surely, 2^3006181 is an apocalyptic number.

It is an amenable number.

3006181 is a deficient number, since it is larger than the sum of its proper divisors (6983).

3006181 is an equidigital number, since it uses as much as digits as its factorization.

3006181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6982.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 3006181 is about 1733.8341904577. The cubic root of 3006181 is about 144.3239395783.

The spelling of 3006181 in words is "three million, six thousand, one hundred eighty-one".