155943 has 6 divisors (see below), whose sum is σ = 225264. Its totient is φ = 103956.

The previous prime is 155921. The next prime is 156007. The reversal of 155943 is 349551.

155943 is nontrivially palindromic in base 15.

It is not a de Polignac number, because 155943 - 2¹² = 151847 is a prime.

155943 is an undulating number in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8655 + ... + 8672.

It is an arithmetic number, because the mean of its divisors is an integer number (37544).

2¹⁵⁵⁹⁴³ is an apocalyptic number.

155943 is a deficient number, since it is larger than the sum of its proper divisors (69321).

155943 is a wasteful number, since it uses less digits than its factorization.

155943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17333 (or 17330 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 155943 is about 394.8961888902. The cubic root of 155943 is about 53.8255688453.

The spelling of 155943 in words is "one hundred fifty-five thousand, nine hundred forty-three".