3225021 has 4 divisors (see below), whose sum is σ = 4300032. Its totient is φ = 2150012.

The previous prime is 3225011. The next prime is 3225029. The reversal of 3225021 is 1205223.

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.

It is a cyclic number.

It is not a de Polignac number, because 3225021 - 2¹⁵ = 3192253 is a prime.

It is a D-number.

3225021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3225029) 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, 537501 + ... + 537506.

It is an arithmetic number, because the mean of its divisors is an integer number (1075008).

Almost surely, 2^3225021 is an apocalyptic number.

It is an amenable number.

3225021 is a deficient number, since it is larger than the sum of its proper divisors (1075011).

3225021 is a wasteful number, since it uses less digits than its factorization.

3225021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075010.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 3225021 is about 1795.8343464808. The cubic root of 3225021 is about 147.7443388682.

The spelling of 3225021 in words is "three million, two hundred twenty-five thousand, twenty-one".