156103 has 4 divisors (see below), whose sum is σ = 160360. Its totient is φ = 151848.

The previous prime is 156089. The next prime is 156109. The reversal of 156103 is 301651.

156103 is digitally balanced in base 2, 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: 301651 = 7 ⋅43093.

It is not a de Polignac number, because 156103 - 2⁵ = 156071 is a prime.

It is a Duffinian number.

156103 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156109) 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, 2073 + ... + 2146.

It is an arithmetic number, because the mean of its divisors is an integer number (40090).

2¹⁵⁶¹⁰³ is an apocalyptic number.

156103 is a deficient number, since it is larger than the sum of its proper divisors (4257).

156103 is an equidigital number, since it uses as much as digits as its factorization.

156103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 156103 is about 395.0987218405. The cubic root of 156103 is about 53.8439711831.

Adding to 156103 its reverse (301651), we get a palindrome (457754).

The spelling of 156103 in words is "one hundred fifty-six thousand, one hundred three".