1253313445 has 16 divisors (see below), whose sum is σ = 1557221760. Its totient is φ = 967215424.

The previous prime is 1253313443. The next prime is 1253313449. The reversal of 1253313445 is 5443133521.

It is not a de Polignac number, because 1253313445 - 2¹ = 1253313443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253313443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195054 + ... + 201376.

It is an arithmetic number, because the mean of its divisors is an integer number (97326360).

Almost surely, 2^1253313445 is an apocalyptic number.

It is an amenable number.

1253313445 is a deficient number, since it is larger than the sum of its proper divisors (303908315).

1253313445 is a wasteful number, since it uses less digits than its factorization.

1253313445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7724.

The product of its digits is 21600, while the sum is 31.

The square root of 1253313445 is about 35402.1672359193. The cubic root of 1253313445 is about 1078.1683186907.

Adding to 1253313445 its reverse (5443133521), we get a palindrome (6696446966).

The spelling of 1253313445 in words is "one billion, two hundred fifty-three million, three hundred thirteen thousand, four hundred forty-five".