3451221 has 32 divisors (see below), whose sum is σ = 5541120. Its totient is φ = 2115072.

The previous prime is 3451211. The next prime is 3451229. The reversal of 3451221 is 1221543.

3451221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3451221 - 2⁶ = 3451157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3451194 and 3451203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3451229) 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 31 ways as a sum of consecutive naturals, for example, 33456 + ... + 33558.

It is an arithmetic number, because the mean of its divisors is an integer number (173160).

Almost surely, 2^3451221 is an apocalyptic number.

It is an amenable number.

3451221 is a deficient number, since it is larger than the sum of its proper divisors (2089899).

3451221 is a wasteful number, since it uses less digits than its factorization.

3451221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 196 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 3451221 is about 1857.7462151758. The cubic root of 3451221 is about 151.1208044572.

Adding to 3451221 its reverse (1221543), we get a palindrome (4672764).

The spelling of 3451221 in words is "three million, four hundred fifty-one thousand, two hundred twenty-one".