15281489 has 2 divisors, whose sum is σ = 15281490. Its totient is φ = 15281488.

The previous prime is 15281471. The next prime is 15281503. The reversal of 15281489 is 98418251.

15281489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15272464 + 9025 = 3908^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 15281489 - 2¹² = 15277393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15281449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7640744 + 7640745.

It is an arithmetic number, because the mean of its divisors is an integer number (7640745).

Almost surely, 2^15281489 is an apocalyptic number.

It is an amenable number.

15281489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15281489 is an equidigital number, since it uses as much as digits as its factorization.

15281489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 38.

The square root of 15281489 is about 3909.1545121676. The cubic root of 15281489 is about 248.1543491563.

The spelling of 15281489 in words is "fifteen million, two hundred eighty-one thousand, four hundred eighty-nine".