13131553 has 2 divisors, whose sum is σ = 13131554. Its totient is φ = 13131552.

The previous prime is 13131541. The next prime is 13131563. The reversal of 13131553 is 35513131.

13131553 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13010449 + 121104 = 3607^2 + 348^2 .

It is an emirp because it is prime and its reverse (35513131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13131553 is a prime.

It is not a weakly prime, because it can be changed into another prime (13131523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565776 + 6565777.

It is an arithmetic number, because the mean of its divisors is an integer number (6565777).

Almost surely, 2^13131553 is an apocalyptic number.

It is an amenable number.

13131553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131553 is an equidigital number, since it uses as much as digits as its factorization.

13131553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 675, while the sum is 22.

The square root of 13131553 is about 3623.7484736113. The cubic root of 13131553 is about 235.9239496889.

Adding to 13131553 its reverse (35513131), we get a palindrome (48644684).

It can be divided in two parts, 131 and 31553, that added together give a square (31684 = 178²).

The spelling of 13131553 in words is "thirteen million, one hundred thirty-one thousand, five hundred fifty-three".