13548749 has 2 divisors, whose sum is σ = 13548750. Its totient is φ = 13548748.

The previous prime is 13548721. The next prime is 13548751. The reversal of 13548749 is 94784531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12460900 + 1087849 = 3530^2 + 1043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13548749 is a prime.

Together with 13548751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13548709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6774374 + 6774375.

It is an arithmetic number, because the mean of its divisors is an integer number (6774375).

Almost surely, 2^13548749 is an apocalyptic number.

It is an amenable number.

13548749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13548749 is an equidigital number, since it uses as much as digits as its factorization.

13548749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 13548749 is about 3680.8625347872. The cubic root of 13548749 is about 238.3964217009.

It can be divided in two parts, 135 and 48749, that added together give a palindrome (48884).

The spelling of 13548749 in words is "thirteen million, five hundred forty-eight thousand, seven hundred forty-nine".