155252223 has 24 divisors (see below), whose sum is σ = 259178400. Its totient is φ = 87715584.

The previous prime is 155252183. The next prime is 155252243. The reversal of 155252223 is 322252551.

It is not a de Polignac number, because 155252223 - 2¹⁷ = 155121151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155252243) 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 23 ways as a sum of consecutive naturals, for example, 8238 + ... + 19451.

It is an arithmetic number, because the mean of its divisors is an integer number (10799100).

Almost surely, 2^155252223 is an apocalyptic number.

155252223 is a deficient number, since it is larger than the sum of its proper divisors (103926177).

155252223 is a wasteful number, since it uses less digits than its factorization.

155252223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27791 (or 27788 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 155252223 is about 12460.0249999749. The cubic root of 155252223 is about 537.4597458947.

The spelling of 155252223 in words is "one hundred fifty-five million, two hundred fifty-two thousand, two hundred twenty-three".