15247289 has 2 divisors, whose sum is σ = 15247290. Its totient is φ = 15247288.

The previous prime is 15247279. The next prime is 15247303. The reversal of 15247289 is 98274251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12306064 + 2941225 = 3508^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 15247289 - 2¹⁶ = 15181753 is a prime.

It is not a weakly prime, because it can be changed into another prime (15247279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7623644 + 7623645.

It is an arithmetic number, because the mean of its divisors is an integer number (7623645).

Almost surely, 2^15247289 is an apocalyptic number.

It is an amenable number.

15247289 is a deficient number, since it is larger than the sum of its proper divisors (1).

15247289 is an equidigital number, since it uses as much as digits as its factorization.

15247289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 15247289 is about 3904.7777145441. Note that the first 4 decimals coincide. The cubic root of 15247289 is about 247.9690875882.

The spelling of 15247289 in words is "fifteen million, two hundred forty-seven thousand, two hundred eighty-nine".