1451321 has 2 divisors, whose sum is σ = 1451322. Its totient is φ = 1451320.

The previous prime is 1451291. The next prime is 1451339. The reversal of 1451321 is 1231541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132096 + 319225 = 1064^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451321 - 2⁶ = 1451257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1451321.

It is not a weakly prime, because it can be changed into another prime (1451371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725660 + 725661.

It is an arithmetic number, because the mean of its divisors is an integer number (725661).

2^1451321 is an apocalyptic number.

It is an amenable number.

1451321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451321 is an equidigital number, since it uses as much as digits as its factorization.

1451321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 17.

The square root of 1451321 is about 1204.7078484014. The cubic root of 1451321 is about 113.2194810126.

Adding to 1451321 its reverse (1231541), we get a palindrome (2682862).

The spelling of 1451321 in words is "one million, four hundred fifty-one thousand, three hundred twenty-one".