5705981 has 2 divisors, whose sum is σ = 5705982. Its totient is φ = 5705980.

The previous prime is 5705977. The next prime is 5706013. The reversal of 5705981 is 1895075.

5705981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 1585081 = 2030^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 5705981 - 2² = 5705977 is a prime.

It is a super-2 number, since 2×5705981² = 65116438344722, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5705281) 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 as a sum of consecutive naturals, namely, 2852990 + 2852991.

It is an arithmetic number, because the mean of its divisors is an integer number (2852991).

Almost surely, 2^5705981 is an apocalyptic number.

It is an amenable number.

5705981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5705981 is an equidigital number, since it uses as much as digits as its factorization.

5705981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 5705981 is about 2388.7195314645. The cubic root of 5705981 is about 178.6940562048.

The spelling of 5705981 in words is "five million, seven hundred five thousand, nine hundred eighty-one".