15955 has 4 divisors (see below), whose sum is σ = 19152. Its totient is φ = 12760.

The previous prime is 15937. The next prime is 15959. The reversal of 15955 is 55951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55951 = 7 ⋅7993.

It is not a de Polignac number, because 15955 - 2⁵ = 15923 is a prime.

It is a Duffinian number.

15955 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (15959) 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, 1591 + ... + 1600.

It is an arithmetic number, because the mean of its divisors is an integer number (4788).

2¹⁵⁹⁵⁵ is an apocalyptic number.

15955 is a deficient number, since it is larger than the sum of its proper divisors (3197).

15955 is an equidigital number, since it uses as much as digits as its factorization.

15955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196.

The product of its digits is 1125, while the sum is 25.

The square root of 15955 is about 126.3131030416. The cubic root of 15955 is about 25.1747752965.

It can be divided in two parts, 1595 and 5, that added together give a square (1600 = 40²).

The spelling of 15955 in words is "fifteen thousand, nine hundred fifty-five".