1283549 has 2 divisors, whose sum is σ = 1283550. Its totient is φ = 1283548.

The previous prime is 1283543. The next prime is 1283563. The reversal of 1283549 is 9453821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 964324 + 319225 = 982^2 + 565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1283549 is a prime.

It is a super-3 number, since 3×1283549³ = 6343933367522754447, which contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641774 + 641775.

It is an arithmetic number, because the mean of its divisors is an integer number (641775).

2^1283549 is an apocalyptic number.

It is an amenable number.

1283549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283549 is an equidigital number, since it uses as much as digits as its factorization.

1283549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 1283549 is about 1132.9382154381. The cubic root of 1283549 is about 108.6769606886.

The spelling of 1283549 in words is "one million, two hundred eighty-three thousand, five hundred forty-nine".