155623163 has 4 divisors (see below), whose sum is σ = 155672448. Its totient is φ = 155573880.

The previous prime is 155623159. The next prime is 155623189. The reversal of 155623163 is 361326551.

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 155623163 - 2² = 155623159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155623103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19556 + ... + 26337.

It is an arithmetic number, because the mean of its divisors is an integer number (38918112).

Almost surely, 2^155623163 is an apocalyptic number.

155623163 is a deficient number, since it is larger than the sum of its proper divisors (49285).

155623163 is an equidigital number, since it uses as much as digits as its factorization.

155623163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49284.

The product of its digits is 16200, while the sum is 32.

The square root of 155623163 is about 12474.9013222550. The cubic root of 155623163 is about 537.8874515239.

The spelling of 155623163 in words is "one hundred fifty-five million, six hundred twenty-three thousand, one hundred sixty-three".