13553 has 2 divisors, whose sum is σ = 13554. Its totient is φ = 13552.

The previous prime is 13537. The next prime is 13567. The reversal of 13553 is 35531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12769 + 784 = 113^2 + 28^2 .

It is an emirp because it is prime and its reverse (35531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13553 - 2⁴ = 13537 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776 + 6777.

It is an arithmetic number, because the mean of its divisors is an integer number (6777).

2¹³⁵⁵³ is an apocalyptic number.

It is an amenable number.

13553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13553 is an equidigital number, since it uses as much as digits as its factorization.

13553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225, while the sum is 17.

The square root of 13553 is about 116.4173526584. The cubic root of 13553 is about 23.8421351855.

The spelling of 13553 in words is "thirteen thousand, five hundred fifty-three".