1447561 has 2 divisors, whose sum is σ = 1447562. Its totient is φ = 1447560.

The previous prime is 1447559. The next prime is 1447571. The reversal of 1447561 is 1657441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000000 + 447561 = 1000^2 + 669^2 .

It is an emirp because it is prime and its reverse (1657441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1447561 - 2¹ = 1447559 is a prime.

Together with 1447559, it forms a pair of twin primes.

1447561 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1447571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723780 + 723781.

It is an arithmetic number, because the mean of its divisors is an integer number (723781).

2^1447561 is an apocalyptic number.

It is an amenable number.

1447561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447561 is an equidigital number, since it uses as much as digits as its factorization.

1447561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 1447561 is about 1203.1462920194. The cubic root of 1447561 is about 113.1216222550.

The spelling of 1447561 in words is "one million, four hundred forty-seven thousand, five hundred sixty-one".