1451423321 has 2 divisors, whose sum is σ = 1451423322. Its totient is φ = 1451423320.

The previous prime is 1451423299. The next prime is 1451423371. The reversal of 1451423321 is 1233241541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 787588096 + 663835225 = 28064^2 + 25765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451423321 - 2¹⁴ = 1451406937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1451423371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725711660 + 725711661.

It is an arithmetic number, because the mean of its divisors is an integer number (725711661).

Almost surely, 2^1451423321 is an apocalyptic number.

It is an amenable number.

1451423321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451423321 is an equidigital number, since it uses as much as digits as its factorization.

1451423321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 1451423321 is about 38097.5500655882. The cubic root of 1451423321 is about 1132.2214168245.

Adding to 1451423321 its reverse (1233241541), we get a palindrome (2684664862).

The spelling of 1451423321 in words is "one billion, four hundred fifty-one million, four hundred twenty-three thousand, three hundred twenty-one".