13745213 has 2 divisors, whose sum is σ = 13745214. Its totient is φ = 13745212.

The previous prime is 13745203. The next prime is 13745233. The reversal of 13745213 is 31254731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13741849 + 3364 = 3707^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 13745213 - 2⁸ = 13744957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13745203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6872606 + 6872607.

It is an arithmetic number, because the mean of its divisors is an integer number (6872607).

Almost surely, 2^13745213 is an apocalyptic number.

It is an amenable number.

13745213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13745213 is an equidigital number, since it uses as much as digits as its factorization.

13745213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 13745213 is about 3707.4537084096. The cubic root of 13745213 is about 239.5431877754.

Adding to 13745213 its reverse (31254731), we get a palindrome (44999944).

The spelling of 13745213 in words is "thirteen million, seven hundred forty-five thousand, two hundred thirteen".