13453445 has 4 divisors (see below), whose sum is σ = 16144140. Its totient is φ = 10762752.

The previous prime is 13453397. The next prime is 13453457. The reversal of 13453445 is 54435431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54435431 = 1303 ⋅41777.

It can be written as a sum of positive squares in 2 ways, for example, as 10543009 + 2910436 = 3247^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 13453445 - 2⁶ = 13453381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345340 + ... + 1345349.

It is an arithmetic number, because the mean of its divisors is an integer number (4036035).

Almost surely, 2^13453445 is an apocalyptic number.

It is an amenable number.

13453445 is a deficient number, since it is larger than the sum of its proper divisors (2690695).

13453445 is an equidigital number, since it uses as much as digits as its factorization.

13453445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690694.

The product of its digits is 14400, while the sum is 29.

The square root of 13453445 is about 3667.8938098042. The cubic root of 13453445 is about 237.8361334646.

Adding to 13453445 its reverse (54435431), we get a palindrome (67888876).

The spelling of 13453445 in words is "thirteen million, four hundred fifty-three thousand, four hundred forty-five".