3543581 has 2 divisors, whose sum is σ = 3543582. Its totient is φ = 3543580.

The previous prime is 3543577. The next prime is 3543583. The reversal of 3543581 is 1853453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1876900 + 1666681 = 1370^2 + 1291^2 .

It is a cyclic number.

It is not a de Polignac number, because 3543581 - 2² = 3543577 is a prime.

It is a super-2 number, since 2×3543581² = 25113932607122, which contains 22 as substring.

Together with 3543583, 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 (3543583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1771790 + 1771791.

It is an arithmetic number, because the mean of its divisors is an integer number (1771791).

Almost surely, 2^3543581 is an apocalyptic number.

It is an amenable number.

3543581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3543581 is an equidigital number, since it uses as much as digits as its factorization.

3543581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 3543581 is about 1882.4401716921. The cubic root of 3543581 is about 152.4570299072.

The spelling of 3543581 in words is "three million, five hundred forty-three thousand, five hundred eighty-one".