3325721 has 4 divisors (see below), whose sum is σ = 3800832. Its totient is φ = 2850612.

The previous prime is 3325717. The next prime is 3325733. The reversal of 3325721 is 1275233.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1275233 = 53 ⋅24061.

It is a cyclic number.

It is not a de Polignac number, because 3325721 - 2² = 3325717 is a prime.

It is a super-2 number, since 2×3325721² = 22120840339682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3325121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237545 + ... + 237558.

It is an arithmetic number, because the mean of its divisors is an integer number (950208).

Almost surely, 2^3325721 is an apocalyptic number.

It is an amenable number.

3325721 is a deficient number, since it is larger than the sum of its proper divisors (475111).

3325721 is an equidigital number, since it uses as much as digits as its factorization.

3325721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475110.

The product of its digits is 1260, while the sum is 23.

The square root of 3325721 is about 1823.6559434279. The cubic root of 3325721 is about 149.2663583906.

The spelling of 3325721 in words is "three million, three hundred twenty-five thousand, seven hundred twenty-one".