15339281 has 2 divisors, whose sum is σ = 15339282. Its totient is φ = 15339280.

The previous prime is 15339277. The next prime is 15339283. The reversal of 15339281 is 18293351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15335056 + 4225 = 3916^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 15339281 - 2² = 15339277 is a prime.

It is a super-2 number, since 2×15339281² = 470587083193922, which contains 22 as substring.

Together with 15339283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15339283) 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, 7669640 + 7669641.

It is an arithmetic number, because the mean of its divisors is an integer number (7669641).

Almost surely, 2^15339281 is an apocalyptic number.

It is an amenable number.

15339281 is a deficient number, since it is larger than the sum of its proper divisors (1).

15339281 is an equidigital number, since it uses as much as digits as its factorization.

15339281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 15339281 is about 3916.5394163726. The cubic root of 15339281 is about 248.4667815203.

The spelling of 15339281 in words is "fifteen million, three hundred thirty-nine thousand, two hundred eighty-one".