3351921 has 4 divisors (see below), whose sum is σ = 4469232. Its totient is φ = 2234612.

The previous prime is 3351883. The next prime is 3351947. The reversal of 3351921 is 1291533.

It is a happy number.

3351921 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: 1291533 = 3 ⋅430511.

It is a cyclic number.

It is not a de Polignac number, because 3351921 - 2¹¹ = 3349873 is a prime.

It is a super-2 number, since 2×3351921² = 22470748780482, which contains 22 as substring.

It is a D-number.

3351921 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3351891 and 3351900.

It is not an unprimeable number, because it can be changed into a prime (3351121) 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, 558651 + ... + 558656.

It is an arithmetic number, because the mean of its divisors is an integer number (1117308).

Almost surely, 2^3351921 is an apocalyptic number.

It is an amenable number.

3351921 is a deficient number, since it is larger than the sum of its proper divisors (1117311).

3351921 is a wasteful number, since it uses less digits than its factorization.

3351921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117310.

The product of its digits is 810, while the sum is 24.

The square root of 3351921 is about 1830.8252237721. The cubic root of 3351921 is about 149.6573065598.

The spelling of 3351921 in words is "three million, three hundred fifty-one thousand, nine hundred twenty-one".