123155552 has 24 divisors (see below), whose sum is σ = 261114336. Its totient is φ = 56840832.

The previous prime is 123155519. The next prime is 123155561. The reversal of 123155552 is 255551321.

It is a congruent number.

It is an unprimeable number.

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, 147608 + ... + 148439.

It is an arithmetic number, because the mean of its divisors is an integer number (10879764).

Almost surely, 2^123155552 is an apocalyptic number.

It is an amenable number.

123155552 is an abundant number, since it is smaller than the sum of its proper divisors (137958784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123155552 is a wasteful number, since it uses less digits than its factorization.

123155552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296070 (or 296062 counting only the distinct ones).

The product of its digits is 7500, while the sum is 29.

The square root of 123155552 is about 11097.5471163677. The cubic root of 123155552 is about 497.5285398979.

The spelling of 123155552 in words is "one hundred twenty-three million, one hundred fifty-five thousand, five hundred fifty-two".