155143 has 4 divisors (see below), whose sum is σ = 156240. Its totient is φ = 154048.

The previous prime is 155137. The next prime is 155153. The reversal of 155143 is 341551.

155143 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 155143 - 2¹⁷ = 24071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155153) 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, 298 + ... + 631.

It is an arithmetic number, because the mean of its divisors is an integer number (39060).

2¹⁵⁵¹⁴³ is an apocalyptic number.

155143 is a deficient number, since it is larger than the sum of its proper divisors (1097).

155143 is an equidigital number, since it uses as much as digits as its factorization.

155143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096.

The product of its digits is 300, while the sum is 19.

The square root of 155143 is about 393.8819620140. The cubic root of 155143 is about 53.7333678484.

Adding to 155143 its reverse (341551), we get a palindrome (496694).

The spelling of 155143 in words is "one hundred fifty-five thousand, one hundred forty-three".