155203 has 2 divisors, whose sum is σ = 155204. Its totient is φ = 155202.

The previous prime is 155201. The next prime is 155209. The reversal of 155203 is 302551.

155203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (302551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155203 - 2¹ = 155201 is a prime.

Together with 155201, it forms a pair of twin primes.

155203 is a lucky number.

It is equal to p₁₄₂₉₀ and since 155203 and 14290 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (155201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77601 + 77602.

It is an arithmetic number, because the mean of its divisors is an integer number (77602).

2¹⁵⁵²⁰³ is an apocalyptic number.

155203 is a deficient number, since it is larger than the sum of its proper divisors (1).

155203 is an equidigital number, since it uses as much as digits as its factorization.

155203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 155203 is about 393.9581196016. The cubic root of 155203 is about 53.7402939027.

Adding to 155203 its reverse (302551), we get a palindrome (457754).

The spelling of 155203 in words is "one hundred fifty-five thousand, two hundred three".