3243257 has 4 divisors (see below), whose sum is σ = 3252900. Its totient is φ = 3233616.

The previous prime is 3243239. The next prime is 3243271. The reversal of 3243257 is 7523423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7523423 = 499 ⋅15077.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 2042041 = 1096^2 + 1429^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243257 - 2⁶ = 3243193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3248257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4298 + ... + 4995.

It is an arithmetic number, because the mean of its divisors is an integer number (813225).

Almost surely, 2^3243257 is an apocalyptic number.

It is an amenable number.

3243257 is a deficient number, since it is larger than the sum of its proper divisors (9643).

3243257 is an equidigital number, since it uses as much as digits as its factorization.

3243257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642.

The product of its digits is 5040, while the sum is 26.

The square root of 3243257 is about 1800.9044949691. The cubic root of 3243257 is about 148.0222908962.

The spelling of 3243257 in words is "three million, two hundred forty-three thousand, two hundred fifty-seven".