3558421 has 2 divisors, whose sum is σ = 3558422. Its totient is φ = 3558420.

The previous prime is 3558409. The next prime is 3558433. The reversal of 3558421 is 1248553.

It is a balanced prime because it is at equal distance from previous prime (3558409) and next prime (3558433).

It can be written as a sum of positive squares in only one way, i.e., 3294225 + 264196 = 1815^2 + 514^2 .

It is an emirp because it is prime and its reverse (1248553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3558421 - 2¹⁹ = 3034133 is a prime.

It is a super-4 number, since 4×3558421⁴ (a number of 27 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3558421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3558461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1779210 + 1779211.

It is an arithmetic number, because the mean of its divisors is an integer number (1779211).

Almost surely, 2^3558421 is an apocalyptic number.

It is an amenable number.

3558421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3558421 is an equidigital number, since it uses as much as digits as its factorization.

3558421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 28.

The square root of 3558421 is about 1886.3777458399. The cubic root of 3558421 is about 152.6695561026.

The spelling of 3558421 in words is "three million, five hundred fifty-eight thousand, four hundred twenty-one".