3551389 has 2 divisors, whose sum is σ = 3551390. Its totient is φ = 3551388.

The previous prime is 3551363. The next prime is 3551411. The reversal of 3551389 is 9831553.

3551389 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., 3452164 + 99225 = 1858^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 3551389 - 2¹¹ = 3549341 is a prime.

It is a super-2 number, since 2×3551389² = 25224727658642, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3551089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775694 + 1775695.

It is an arithmetic number, because the mean of its divisors is an integer number (1775695).

Almost surely, 2^3551389 is an apocalyptic number.

It is an amenable number.

3551389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551389 is an equidigital number, since it uses as much as digits as its factorization.

3551389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 3551389 is about 1884.5129344210. The cubic root of 3551389 is about 152.5689234270.

The spelling of 3551389 in words is "three million, five hundred fifty-one thousand, three hundred eighty-nine".