3055681 has 4 divisors (see below), whose sum is σ = 3063172. Its totient is φ = 3048192.

The previous prime is 3055651. The next prime is 3055687. The reversal of 3055681 is 1865503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2005056 + 1050625 = 1416^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 3055681 - 2⁵ = 3055649 is a prime.

It is a super-2 number, since 2×3055681² = 18674372747522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3055687) 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, 3096 + ... + 3961.

It is an arithmetic number, because the mean of its divisors is an integer number (765793).

Almost surely, 2^3055681 is an apocalyptic number.

It is an amenable number.

3055681 is a deficient number, since it is larger than the sum of its proper divisors (7491).

3055681 is an equidigital number, since it uses as much as digits as its factorization.

3055681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7490.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 3055681 is about 1748.0506285574. The cubic root of 3055681 is about 145.1117806313. Note that the first 3 decimals are identical.

The spelling of 3055681 in words is "three million, fifty-five thousand, six hundred eighty-one".