3552421 has 2 divisors, whose sum is σ = 3552422. Its totient is φ = 3552420.

The previous prime is 3552397. The next prime is 3552427. The reversal of 3552421 is 1242553.

3552421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2722500 + 829921 = 1650^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 3552421 - 2⁹ = 3551909 is a prime.

It is a super-2 number, since 2×3552421² = 25239389922482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3552392 and 3552401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3552427) 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 as a sum of consecutive naturals, namely, 1776210 + 1776211.

It is an arithmetic number, because the mean of its divisors is an integer number (1776211).

Almost surely, 2^3552421 is an apocalyptic number.

It is an amenable number.

3552421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3552421 is an equidigital number, since it uses as much as digits as its factorization.

3552421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 22.

The square root of 3552421 is about 1884.7867253353. The cubic root of 3552421 is about 152.5837003570.

Adding to 3552421 its reverse (1242553), we get a palindrome (4794974).

The spelling of 3552421 in words is "three million, five hundred fifty-two thousand, four hundred twenty-one".