3056981 has 2 divisors, whose sum is σ = 3056982. Its totient is φ = 3056980.

The previous prime is 3056971. The next prime is 3056983. The reversal of 3056981 is 1896503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2402500 + 654481 = 1550^2 + 809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3056981 is a prime.

It is a super-2 number, since 2×3056981² = 18690265668722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 3056983, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3056983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1528490 + 1528491.

It is an arithmetic number, because the mean of its divisors is an integer number (1528491).

Almost surely, 2^3056981 is an apocalyptic number.

It is an amenable number.

3056981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3056981 is an equidigital number, since it uses as much as digits as its factorization.

3056981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 3056981 is about 1748.4224317939. The cubic root of 3056981 is about 145.1323563577.

The spelling of 3056981 in words is "three million, fifty-six thousand, nine hundred eighty-one".