3575981 has 2 divisors, whose sum is σ = 3575982. Its totient is φ = 3575980.

The previous prime is 3575959. The next prime is 3575983. The reversal of 3575981 is 1895753.

3575981 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., 3575881 + 100 = 1891^2 + 10^2 .

It is an emirp because it is prime and its reverse (1895753) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3575981 - 2⁶ = 3575917 is a prime.

It is a super-2 number, since 2×3575981² = 25575280224722, which contains 22 as substring.

Together with 3575983, 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 (3575983) 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, 1787990 + 1787991.

It is an arithmetic number, because the mean of its divisors is an integer number (1787991).

Almost surely, 2^3575981 is an apocalyptic number.

It is an amenable number.

3575981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3575981 is an equidigital number, since it uses as much as digits as its factorization.

3575981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The square root of 3575981 is about 1891.0264408516. The cubic root of 3575981 is about 152.9202740114.

The spelling of 3575981 in words is "three million, five hundred seventy-five thousand, nine hundred eighty-one".