3523781 has 2 divisors, whose sum is σ = 3523782. Its totient is φ = 3523780.

The previous prime is 3523771. The next prime is 3523799. The reversal of 3523781 is 1873253.

3523781 is digitally balanced in base 2, 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., 2775556 + 748225 = 1666^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 3523781 - 2¹⁴ = 3507397 is a prime.

It is a super-2 number, since 2×3523781² = 24834065071922, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3523711) 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, 1761890 + 1761891.

It is an arithmetic number, because the mean of its divisors is an integer number (1761891).

Almost surely, 2^3523781 is an apocalyptic number.

It is an amenable number.

3523781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3523781 is an equidigital number, since it uses as much as digits as its factorization.

3523781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 3523781 is about 1877.1736733718. The cubic root of 3523781 is about 152.1725447106.

The spelling of 3523781 in words is "three million, five hundred twenty-three thousand, seven hundred eighty-one".