155963 has 4 divisors (see below), whose sum is σ = 162768. Its totient is φ = 149160.

The previous prime is 155921. The next prime is 156007. The reversal of 155963 is 369551.

155963 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.

It is a cyclic number.

It is not a de Polignac number, because 155963 - 2⁸ = 155707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155663) 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, 3368 + ... + 3413.

It is an arithmetic number, because the mean of its divisors is an integer number (40692).

2¹⁵⁵⁹⁶³ is an apocalyptic number.

155963 is a deficient number, since it is larger than the sum of its proper divisors (6805).

155963 is an equidigital number, since it uses as much as digits as its factorization.

155963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804.

The product of its digits is 4050, while the sum is 29.

The square root of 155963 is about 394.9215111892. The cubic root of 155963 is about 53.8278698257.

The spelling of 155963 in words is "one hundred fifty-five thousand, nine hundred sixty-three".