1485821 has 2 divisors, whose sum is σ = 1485822. Its totient is φ = 1485820.

The previous prime is 1485793. The next prime is 1485853. The reversal of 1485821 is 1285841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 828100 + 657721 = 910^2 + 811^2 .

It is an emirp because it is prime and its reverse (1285841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1485821 - 2¹⁴ = 1469437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1485871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 742910 + 742911.

It is an arithmetic number, because the mean of its divisors is an integer number (742911).

2^1485821 is an apocalyptic number.

It is an amenable number.

1485821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1485821 is an equidigital number, since it uses as much as digits as its factorization.

1485821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 29.

The square root of 1485821 is about 1218.9425745293. The cubic root of 1485821 is about 114.1095950266.

The spelling of 1485821 in words is "one million, four hundred eighty-five thousand, eight hundred twenty-one".