155214823 has 4 divisors (see below), whose sum is σ = 155240928. Its totient is φ = 155188720.

The previous prime is 155214817. The next prime is 155214827. The reversal of 155214823 is 328412551.

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 155214823 - 2¹⁷ = 155083751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155214827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690 + ... + 17632.

It is an arithmetic number, because the mean of its divisors is an integer number (38810232).

Almost surely, 2^155214823 is an apocalyptic number.

155214823 is a deficient number, since it is larger than the sum of its proper divisors (26105).

155214823 is an equidigital number, since it uses as much as digits as its factorization.

155214823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26104.

The product of its digits is 9600, while the sum is 31.

The square root of 155214823 is about 12458.5241100220. The cubic root of 155214823 is about 537.4165847117.

The spelling of 155214823 in words is "one hundred fifty-five million, two hundred fourteen thousand, eight hundred twenty-three".