15487 has 4 divisors (see below), whose sum is σ = 16416. Its totient is φ = 14560.

The previous prime is 15473. The next prime is 15493. The reversal of 15487 is 78451.

15487 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78451 = 19 ⋅4129.

It is a cyclic number.

It is not a de Polignac number, because 15487 - 2⁷ = 15359 is a prime.

It is a Duffinian number.

15487 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15427) 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 in 3 ways as a sum of consecutive naturals, for example, 439 + ... + 472.

It is an arithmetic number, because the mean of its divisors is an integer number (4104).

2¹⁵⁴⁸⁷ is an apocalyptic number.

15487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

15487 is a deficient number, since it is larger than the sum of its proper divisors (929).

15487 is an equidigital number, since it uses as much as digits as its factorization.

15487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928.

The product of its digits is 1120, while the sum is 25.

The square root of 15487 is about 124.4467757718. The cubic root of 15487 is about 24.9261822521.

The spelling of 15487 in words is "fifteen thousand, four hundred eighty-seven".