13281251 has 2 divisors, whose sum is σ = 13281252. Its totient is φ = 13281250.

The previous prime is 13281241. The next prime is 13281271. The reversal of 13281251 is 15218231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13281251 - 2¹⁰ = 13280227 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13281221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6640625 + 6640626.

It is an arithmetic number, because the mean of its divisors is an integer number (6640626).

Almost surely, 2^13281251 is an apocalyptic number.

13281251 is a deficient number, since it is larger than the sum of its proper divisors (1).

13281251 is an equidigital number, since it uses as much as digits as its factorization.

13281251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 13281251 is about 3644.3450714772. The cubic root of 13281251 is about 236.8170652401.

Adding to 13281251 its reverse (15218231), we get a palindrome (28499482).

The spelling of 13281251 in words is "thirteen million, two hundred eighty-one thousand, two hundred fifty-one".