3527981 has 2 divisors, whose sum is σ = 3527982. Its totient is φ = 3527980.

The previous prime is 3527969. The next prime is 3527983. The reversal of 3527981 is 1897253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 586756 = 1715^2 + 766^2 .

It is a cyclic number.

It is not a de Polignac number, because 3527981 - 2⁶ = 3527917 is a prime.

It is a super-2 number, since 2×3527981² = 24893299872722, which contains 22 as substring.

Together with 3527983, 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 (3527983) 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, 1763990 + 1763991.

It is an arithmetic number, because the mean of its divisors is an integer number (1763991).

Almost surely, 2^3527981 is an apocalyptic number.

It is an amenable number.

3527981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3527981 is an equidigital number, since it uses as much as digits as its factorization.

3527981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 3527981 is about 1878.2920433202. The cubic root of 3527981 is about 152.2329789365.

The spelling of 3527981 in words is "three million, five hundred twenty-seven thousand, nine hundred eighty-one".