3243561 has 8 divisors (see below), whose sum is σ = 4464384. Its totient is φ = 2092560.

The previous prime is 3243523. The next prime is 3243587. The reversal of 3243561 is 1653423.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3243561 - 2⁶ = 3243497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3243511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17346 + ... + 17531.

It is an arithmetic number, because the mean of its divisors is an integer number (558048).

Almost surely, 2^3243561 is an apocalyptic number.

3243561 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3243561 is a deficient number, since it is larger than the sum of its proper divisors (1220823).

3243561 is a wasteful number, since it uses less digits than its factorization.

3243561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34911.

The product of its digits is 2160, while the sum is 24.

The square root of 3243561 is about 1800.9888950241. The cubic root of 3243561 is about 148.0269156064.

Adding to 3243561 its reverse (1653423), we get a palindrome (4896984).

The spelling of 3243561 in words is "three million, two hundred forty-three thousand, five hundred sixty-one".