13533449 has 2 divisors, whose sum is σ = 13533450. Its totient is φ = 13533448.

The previous prime is 13533439. The next prime is 13533451. The reversal of 13533449 is 94433531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10843849 + 2689600 = 3293^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 13533449 - 2¹² = 13529353 is a prime.

Together with 13533451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13533409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6766724 + 6766725.

It is an arithmetic number, because the mean of its divisors is an integer number (6766725).

Almost surely, 2^13533449 is an apocalyptic number.

It is an amenable number.

13533449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13533449 is an equidigital number, since it uses as much as digits as its factorization.

13533449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 32.

The square root of 13533449 is about 3678.7836304953. The cubic root of 13533449 is about 238.3066510737.

It can be divided in two parts, 135334 and 49, that multiplied together give a palindrome (6631366).

The spelling of 13533449 in words is "thirteen million, five hundred thirty-three thousand, four hundred forty-nine".