13003253 has 4 divisors (see below), whose sum is σ = 13010700. Its totient is φ = 12995808.

The previous prime is 13003247. The next prime is 13003259. The reversal of 13003253 is 35230031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35230031 = 37 ⋅952163.

It is an interprime number because it is at equal distance from previous prime (13003247) and next prime (13003259).

It can be written as a sum of positive squares in 2 ways, for example, as 11546404 + 1456849 = 3398^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 13003253 - 2¹² = 12999157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13003259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473 + ... + 5121.

It is an arithmetic number, because the mean of its divisors is an integer number (3252675).

Almost surely, 2^13003253 is an apocalyptic number.

It is an amenable number.

13003253 is a deficient number, since it is larger than the sum of its proper divisors (7447).

13003253 is an equidigital number, since it uses as much as digits as its factorization.

13003253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7446.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 13003253 is about 3606.0023571817. The cubic root of 13003253 is about 235.1530796793.

Subtracting from 13003253 its sum of digits (17), we obtain a square (13003236 = 3606²).

Adding to 13003253 its reverse (35230031), we get a palindrome (48233284).

The spelling of 13003253 in words is "thirteen million, three thousand, two hundred fifty-three".