3591281 has 2 divisors, whose sum is σ = 3591282. Its totient is φ = 3591280.

The previous prime is 3591193. The next prime is 3591283. The reversal of 3591281 is 1821953.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3591025 + 256 = 1895^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 3591281 - 2¹⁴ = 3574897 is a prime.

It is a super-2 number, since 2×3591281² = 25794598441922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 3591283, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3591283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1795640 + 1795641.

It is an arithmetic number, because the mean of its divisors is an integer number (1795641).

Almost surely, 2^3591281 is an apocalyptic number.

3591281 is the 848-th centered decagonal number.

It is an amenable number.

3591281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3591281 is an equidigital number, since it uses as much as digits as its factorization.

3591281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 3591281 is about 1895.0675449704. The cubic root of 3591281 is about 153.1380558630.

The spelling of 3591281 in words is "three million, five hundred ninety-one thousand, two hundred eighty-one".