1145323253 has 2 divisors, whose sum is σ = 1145323254. Its totient is φ = 1145323252.

The previous prime is 1145323247. The next prime is 1145323261. The reversal of 1145323253 is 3523235411.

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., 622652209 + 522671044 = 24953^2 + 22862^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145323253 - 2⁴ = 1145323237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145323273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572661626 + 572661627.

It is an arithmetic number, because the mean of its divisors is an integer number (572661627).

Almost surely, 2^1145323253 is an apocalyptic number.

It is an amenable number.

1145323253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145323253 is an equidigital number, since it uses as much as digits as its factorization.

1145323253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 1145323253 is about 33842.6247947762. The cubic root of 1145323253 is about 1046.2673977924.

Adding to 1145323253 its reverse (3523235411), we get a palindrome (4668558664).

The spelling of 1145323253 in words is "one billion, one hundred forty-five million, three hundred twenty-three thousand, two hundred fifty-three".