2750981 has 2 divisors, whose sum is σ = 2750982. Its totient is φ = 2750980.

The previous prime is 2750963. The next prime is 2750983. The reversal of 2750981 is 1890572.

2750981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1768900 + 982081 = 1330^2 + 991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2750981 is a prime.

It is a super-2 number, since 2×2750981² = 15135792924722, which contains 22 as substring.

Together with 2750983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2750983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1375490 + 1375491.

It is an arithmetic number, because the mean of its divisors is an integer number (1375491).

2^2750981 is an apocalyptic number.

It is an amenable number.

2750981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2750981 is an equidigital number, since it uses as much as digits as its factorization.

2750981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2750981 is about 1658.6081514330. The cubic root of 2750981 is about 140.1186239497.

The spelling of 2750981 in words is "two million, seven hundred fifty thousand, nine hundred eighty-one".