1045549 has 2 divisors, whose sum is σ = 1045550. Its totient is φ = 1045548.

The previous prime is 1045547. The next prime is 1045559. The reversal of 1045549 is 9455401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 964324 + 81225 = 982^2 + 285^2 .

It is an emirp because it is prime and its reverse (9455401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1045549 - 2¹ = 1045547 is a prime.

It is a super-2 number, since 2×1045549² = 2186345422802, which contains 22 as substring.

Together with 1045547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045543) 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, 522774 + 522775.

It is an arithmetic number, because the mean of its divisors is an integer number (522775).

2^1045549 is an apocalyptic number.

It is an amenable number.

1045549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045549 is an equidigital number, since it uses as much as digits as its factorization.

1045549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1045549 is about 1022.5209044318. The cubic root of 1045549 is about 101.4958138486.

The spelling of 1045549 in words is "one million, forty-five thousand, five hundred forty-nine".