1253344453 has 2 divisors, whose sum is σ = 1253344454. Its totient is φ = 1253344452.

The previous prime is 1253344439. The next prime is 1253344459. The reversal of 1253344453 is 3544433521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1253301604 + 42849 = 35402^2 + 207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253344453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253344459) 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, 626672226 + 626672227.

It is an arithmetic number, because the mean of its divisors is an integer number (626672227).

Almost surely, 2^1253344453 is an apocalyptic number.

It is an amenable number.

1253344453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253344453 is an equidigital number, since it uses as much as digits as its factorization.

1253344453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 34.

The square root of 1253344453 is about 35402.6051725011. The cubic root of 1253344453 is about 1078.1772102062.

Adding to 1253344453 its reverse (3544433521), we get a palindrome (4797777974).

The spelling of 1253344453 in words is "one billion, two hundred fifty-three million, three hundred forty-four thousand, four hundred fifty-three".