13525553 has 2 divisors, whose sum is σ = 13525554. Its totient is φ = 13525552.

The previous prime is 13525543. The next prime is 13525559. The reversal of 13525553 is 35552531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13126129 + 399424 = 3623^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 13525553 - 2⁸ = 13525297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13525559) 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, 6762776 + 6762777.

It is an arithmetic number, because the mean of its divisors is an integer number (6762777).

Almost surely, 2^13525553 is an apocalyptic number.

It is an amenable number.

13525553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13525553 is an equidigital number, since it uses as much as digits as its factorization.

13525553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11250, while the sum is 29.

The square root of 13525553 is about 3677.7102931036. The cubic root of 13525553 is about 238.2602959186.

The spelling of 13525553 in words is "thirteen million, five hundred twenty-five thousand, five hundred fifty-three".