13253445 has 24 divisors (see below), whose sum is σ = 23410296. Its totient is φ = 6933888.

The previous prime is 13253441. The next prime is 13253447. The reversal of 13253445 is 54435231.

13253445 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5602689 + 7650756 = 2367^2 + 2766^2 .

It is not a de Polignac number, because 13253445 - 2² = 13253441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13253441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (975429).

Almost surely, 2^13253445 is an apocalyptic number.

13253445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13253445 is a deficient number, since it is larger than the sum of its proper divisors (10156851).

13253445 is a wasteful number, since it uses less digits than its factorization.

13253445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621 (or 5618 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 13253445 is about 3640.5281210286. The cubic root of 13253445 is about 236.6516808162.

Adding to 13253445 its reverse (54435231), we get a palindrome (67688676).

The spelling of 13253445 in words is "thirteen million, two hundred fifty-three thousand, four hundred forty-five".