15945 has 8 divisors (see below), whose sum is σ = 25536. Its totient is φ = 8496.

The previous prime is 15937. The next prime is 15959. The reversal of 15945 is 54951.

15945 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15945 - 2³ = 15937 is a prime.

15945 is strictly pandigital in base 6.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517 + ... + 546.

It is an arithmetic number, because the mean of its divisors is an integer number (3192).

15945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15945 is a deficient number, since it is larger than the sum of its proper divisors (9591).

15945 is a wasteful number, since it uses less digits than its factorization.

15945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its digits is 900, while the sum is 24.

The square root of 15945 is about 126.2735126620. The cubic root of 15945 is about 25.1695146600.

The spelling of 15945 in words is "fifteen thousand, nine hundred forty-five".