155133120 has 112 divisors (see below), whose sum is σ = 502005600. Its totient is φ = 40574976.

The previous prime is 155133101. The next prime is 155133149. The reversal of 155133120 is 21331551.

155133120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49356 + ... + 52404.

Almost surely, 2^155133120 is an apocalyptic number.

155133120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155133120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251002800).

155133120 is an abundant number, since it is smaller than the sum of its proper divisors (346872480).

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

155133120 is a wasteful number, since it uses less digits than its factorization.

155133120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122 (or 3112 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 155133120 is about 12455.2446784477. The cubic root of 155133120 is about 537.3222718686.

Adding to 155133120 its reverse (21331551), we get a palindrome (176464671).

The spelling of 155133120 in words is "one hundred fifty-five million, one hundred thirty-three thousand, one hundred twenty".