13451257 has 2 divisors, whose sum is σ = 13451258. Its totient is φ = 13451256.

The previous prime is 13451237. The next prime is 13451279. The reversal of 13451257 is 75215431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11861136 + 1590121 = 3444^2 + 1261^2 .

It is an emirp because it is prime and its reverse (75215431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13451257 - 2¹¹ = 13449209 is a prime.

It is not a weakly prime, because it can be changed into another prime (13451237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6725628 + 6725629.

It is an arithmetic number, because the mean of its divisors is an integer number (6725629).

Almost surely, 2^13451257 is an apocalyptic number.

It is an amenable number.

13451257 is a deficient number, since it is larger than the sum of its proper divisors (1).

13451257 is an equidigital number, since it uses as much as digits as its factorization.

13451257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 13451257 is about 3667.5955338614. The cubic root of 13451257 is about 237.8232392784.

Adding to 13451257 its reverse (75215431), we get a palindrome (88666688).

The spelling of 13451257 in words is "thirteen million, four hundred fifty-one thousand, two hundred fifty-seven".