3553421 has 4 divisors (see below), whose sum is σ = 3602172. Its totient is φ = 3504672.

The previous prime is 3553411. The next prime is 3553423. The reversal of 3553421 is 1243553.

3553421 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 an emirpimes, since its reverse is a distinct semiprime: 1243553 = 823 ⋅1511.

It can be written as a sum of positive squares in 2 ways, for example, as 1990921 + 1562500 = 1411^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 3553421 - 2¹⁰ = 3552397 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3553423) 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, 24266 + ... + 24411.

It is an arithmetic number, because the mean of its divisors is an integer number (900543).

Almost surely, 2^3553421 is an apocalyptic number.

It is an amenable number.

3553421 is a deficient number, since it is larger than the sum of its proper divisors (48751).

3553421 is an equidigital number, since it uses as much as digits as its factorization.

3553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48750.

The product of its digits is 1800, while the sum is 23.

The square root of 3553421 is about 1885.0519886730. The cubic root of 3553421 is about 152.5980163578.

Adding to 3553421 its reverse (1243553), we get a palindrome (4796974).

The spelling of 3553421 in words is "three million, five hundred fifty-three thousand, four hundred twenty-one".