3252721 has 4 divisors (see below), whose sum is σ = 3261952. Its totient is φ = 3243492.

The previous prime is 3252713. The next prime is 3252731. The reversal of 3252721 is 1272523.

3252721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 1272523 = 7 ⋅181789.

It is a cyclic number.

It is not a de Polignac number, because 3252721 - 2³ = 3252713 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3252692 and 3252701.

It is not an unprimeable number, because it can be changed into a prime (3252731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4065 + ... + 4798.

It is an arithmetic number, because the mean of its divisors is an integer number (815488).

Almost surely, 2^3252721 is an apocalyptic number.

It is an amenable number.

3252721 is a deficient number, since it is larger than the sum of its proper divisors (9231).

3252721 is an equidigital number, since it uses as much as digits as its factorization.

3252721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9230.

The product of its digits is 840, while the sum is 22.

The square root of 3252721 is about 1803.5301494569. The cubic root of 3252721 is about 148.1661301036.

The spelling of 3252721 in words is "three million, two hundred fifty-two thousand, seven hundred twenty-one".