13575449 has 2 divisors, whose sum is σ = 13575450. Its totient is φ = 13575448.

The previous prime is 13575431. The next prime is 13575491. The reversal of 13575449 is 94457531.

13575449 is digitally balanced in base 2 and base 3, because in such bases 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., 9030025 + 4545424 = 3005^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 13575449 - 2¹² = 13571353 is a prime.

It is not a weakly prime, because it can be changed into another prime (13575409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6787724 + 6787725.

It is an arithmetic number, because the mean of its divisors is an integer number (6787725).

Almost surely, 2^13575449 is an apocalyptic number.

It is an amenable number.

13575449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13575449 is an equidigital number, since it uses as much as digits as its factorization.

13575449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The square root of 13575449 is about 3684.4876170236. The cubic root of 13575449 is about 238.5529185067.

The spelling of 13575449 in words is "thirteen million, five hundred seventy-five thousand, four hundred forty-nine".