13520453 has 2 divisors, whose sum is σ = 13520454. Its totient is φ = 13520452.

The previous prime is 13520449. The next prime is 13520477. The reversal of 13520453 is 35402531.

13520453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10640644 + 2879809 = 3262^2 + 1697^2 .

It is an emirp because it is prime and its reverse (35402531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13520453 - 2² = 13520449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13520483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760226 + 6760227.

It is an arithmetic number, because the mean of its divisors is an integer number (6760227).

Almost surely, 2^13520453 is an apocalyptic number.

It is an amenable number.

13520453 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520453 is an equidigital number, since it uses as much as digits as its factorization.

13520453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 13520453 is about 3677.0168615333. The cubic root of 13520453 is about 238.2303456886.

Adding to 13520453 its reverse (35402531), we get a palindrome (48922984).

The spelling of 13520453 in words is "thirteen million, five hundred twenty thousand, four hundred fifty-three".