13338257 has 2 divisors, whose sum is σ = 13338258. Its totient is φ = 13338256.

The previous prime is 13338253. The next prime is 13338313. The reversal of 13338257 is 75283331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12418576 + 919681 = 3524^2 + 959^2 .

It is a cyclic number.

It is not a de Polignac number, because 13338257 - 2² = 13338253 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13338253) 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, 6669128 + 6669129.

It is an arithmetic number, because the mean of its divisors is an integer number (6669129).

Almost surely, 2^13338257 is an apocalyptic number.

It is an amenable number.

13338257 is a deficient number, since it is larger than the sum of its proper divisors (1).

13338257 is an equidigital number, since it uses as much as digits as its factorization.

13338257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 13338257 is about 3652.1578552960. The cubic root of 13338257 is about 237.1554049689.

The spelling of 13338257 in words is "thirteen million, three hundred thirty-eight thousand, two hundred fifty-seven".