15247 has 4 divisors (see below), whose sum is σ = 15520. Its totient is φ = 14976.

The previous prime is 15241. The next prime is 15259. The reversal of 15247 is 74251.

15247 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74251 = 41 ⋅1811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15247 is a prime.

It is a Duffinian number.

15247 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18 + ... + 175.

It is an arithmetic number, because the mean of its divisors is an integer number (3880).

2¹⁵²⁴⁷ is an apocalyptic number.

15247 is a deficient number, since it is larger than the sum of its proper divisors (273).

15247 is an equidigital number, since it uses as much as digits as its factorization.

15247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272.

The product of its digits is 280, while the sum is 19.

The square root of 15247 is about 123.4787431099. The cubic root of 15247 is about 24.7967520894.

Adding to 15247 its reverse (74251), we get a palindrome (89498).

It can be divided in two parts, 15 and 247, that added together give a palindrome (262).

The spelling of 15247 in words is "fifteen thousand, two hundred forty-seven".