13145513 has 2 divisors, whose sum is σ = 13145514. Its totient is φ = 13145512.

The previous prime is 13145507. The next prime is 13145527. The reversal of 13145513 is 31554131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12902464 + 243049 = 3592^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 13145513 - 2⁶ = 13145449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13145533) 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, 6572756 + 6572757.

It is an arithmetic number, because the mean of its divisors is an integer number (6572757).

Almost surely, 2^13145513 is an apocalyptic number.

It is an amenable number.

13145513 is a deficient number, since it is larger than the sum of its proper divisors (1).

13145513 is an equidigital number, since it uses as much as digits as its factorization.

13145513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 23.

The square root of 13145513 is about 3625.6741442110. The cubic root of 13145513 is about 236.0075227421.

Adding to 13145513 its reverse (31554131), we get a palindrome (44699644).

The spelling of 13145513 in words is "thirteen million, one hundred forty-five thousand, five hundred thirteen".