155123008 has 56 divisors (see below), whose sum is σ = 325672704. Its totient is φ = 73190400.

The previous prime is 155122993. The next prime is 155123021. The reversal of 155123008 is 800321551.

It is a happy number.

155123008 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155123008² = 48126295221936128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80391 + ... + 82297.

It is an arithmetic number, because the mean of its divisors is an integer number (5815584).

Almost surely, 2^155123008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155123008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162836352).

155123008 is an abundant number, since it is smaller than the sum of its proper divisors (170549696).

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

155123008 is a wasteful number, since it uses less digits than its factorization.

155123008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1981 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 155123008 is about 12454.8387384181. The cubic root of 155123008 is about 537.3105969044.

Adding to 155123008 its reverse (800321551), we get a palindrome (955444559).

The spelling of 155123008 in words is "one hundred fifty-five million, one hundred twenty-three thousand, eight".