1253083445 has 4 divisors (see below), whose sum is σ = 1503700140. Its totient is φ = 1002466752.

The previous prime is 1253083439. The next prime is 1253083483. The reversal of 1253083445 is 5443803521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5443803521 = 13 ⋅418754117.

It can be written as a sum of positive squares in 2 ways, for example, as 718132804 + 534950641 = 26798^2 + 23129^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253083445 - 2¹⁸ = 1252821301 is a prime.

It is a super-3 number, since 3×1253083445³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 125308340 + ... + 125308349.

It is an arithmetic number, because the mean of its divisors is an integer number (375925035).

Almost surely, 2^1253083445 is an apocalyptic number.

It is an amenable number.

1253083445 is a deficient number, since it is larger than the sum of its proper divisors (250616695).

1253083445 is an equidigital number, since it uses as much as digits as its factorization.

1253083445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250616694.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 1253083445 is about 35398.9186981749. The cubic root of 1253083445 is about 1078.1023618239.

Adding to 1253083445 its reverse (5443803521), we get a palindrome (6696886966).

The spelling of 1253083445 in words is "one billion, two hundred fifty-three million, eighty-three thousand, four hundred forty-five".