13505453 has 4 divisors (see below), whose sum is σ = 14544348. Its totient is φ = 12466560.

The previous prime is 13505449. The next prime is 13505501. The reversal of 13505453 is 35450531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35450531 = 137 ⋅258763.

It can be written as a sum of positive squares in 2 ways, for example, as 1408969 + 12096484 = 1187^2 + 3478^2 .

It is a cyclic number.

It is not a de Polignac number, because 13505453 - 2² = 13505449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13505413) by changing a digit.

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, 519428 + ... + 519453.

It is an arithmetic number, because the mean of its divisors is an integer number (3636087).

Almost surely, 2^13505453 is an apocalyptic number.

13505453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13505453 is a deficient number, since it is larger than the sum of its proper divisors (1038895).

13505453 is a wasteful number, since it uses less digits than its factorization.

13505453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038894.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 13505453 is about 3674.9765985649. The cubic root of 13505453 is about 238.1422131016.

Adding to 13505453 its reverse (35450531), we get a palindrome (48955984).

The spelling of 13505453 in words is "thirteen million, five hundred five thousand, four hundred fifty-three".