155223 has 8 divisors (see below), whose sum is σ = 230000. Its totient is φ = 103464.

The previous prime is 155219. The next prime is 155231. The reversal of 155223 is 322551.

It is a happy number.

It is not a de Polignac number, because 155223 - 2² = 155219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155196 and 155205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2848 + ... + 2901.

It is an arithmetic number, because the mean of its divisors is an integer number (28750).

2¹⁵⁵²²³ is an apocalyptic number.

155223 is a deficient number, since it is larger than the sum of its proper divisors (74777).

155223 is an equidigital number, since it uses as much as digits as its factorization.

155223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758 (or 5752 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 155223 is about 393.9835021927. The cubic root of 155223 is about 53.7426021908.

Adding to 155223 its reverse (322551), we get a palindrome (477774).

It can be divided in two parts, 155 and 223, that added together give a triangular number (378 = T₂₇).

The spelling of 155223 in words is "one hundred fifty-five thousand, two hundred twenty-three".