3551489 has 2 divisors, whose sum is σ = 3551490. Its totient is φ = 3551488.

The previous prime is 3551473. The next prime is 3551501. The reversal of 3551489 is 9841553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3301489 + 250000 = 1817^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 3551489 - 2⁴ = 3551473 is a prime.

It is a super-2 number, since 2×3551489² = 25226148234242, which contains 22 as substring.

It is a Chen prime.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775744 + 1775745.

It is an arithmetic number, because the mean of its divisors is an integer number (1775745).

Almost surely, 2^3551489 is an apocalyptic number.

It is an amenable number.

3551489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551489 is an equidigital number, since it uses as much as digits as its factorization.

3551489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 3551489 is about 1884.5394662888. The cubic root of 3551489 is about 152.5703554253.

Subtracting 3551489 from its reverse (9841553), we obtain a square (6290064 = 2508²).

The spelling of 3551489 in words is "three million, five hundred fifty-one thousand, four hundred eighty-nine".