1253315445 has 16 divisors (see below), whose sum is σ = 2007045312. Its totient is φ = 667854720.

The previous prime is 1253315443. The next prime is 1253315447. The reversal of 1253315445 is 5445133521.

It is an interprime number because it is at equal distance from previous prime (1253315443) and next prime (1253315447).

It is not a de Polignac number, because 1253315445 - 2¹ = 1253315443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253315443) 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, 18112 + ... + 53241.

It is an arithmetic number, because the mean of its divisors is an integer number (125440332).

Almost surely, 2^1253315445 is an apocalyptic number.

1253315445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253315445 is a deficient number, since it is larger than the sum of its proper divisors (753729867).

1253315445 is a wasteful number, since it uses less digits than its factorization.

1253315445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72532.

The product of its digits is 36000, while the sum is 33.

The square root of 1253315445 is about 35402.1954827663. The cubic root of 1253315445 is about 1078.1688921933.

Adding to 1253315445 its reverse (5445133521), we get a palindrome (6698448966).

The spelling of 1253315445 in words is "one billion, two hundred fifty-three million, three hundred fifteen thousand, four hundred forty-five".