155133330 has 64 divisors (see below), whose sum is σ = 430075008. Its totient is φ = 35394560.

The previous prime is 155133317. The next prime is 155133337. The reversal of 155133330 is 33331551.

155133330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155133330.

It is not an unprimeable number, because it can be changed into a prime (155133337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8217 + ... + 19436.

It is an arithmetic number, because the mean of its divisors is an integer number (6719922).

Almost surely, 2^155133330 is an apocalyptic number.

155133330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155133330 is an abundant number, since it is smaller than the sum of its proper divisors (274941678).

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

155133330 is a wasteful number, since it uses less digits than its factorization.

155133330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27691.

The product of its (nonzero) digits is 2025, while the sum is 24.

The square root of 155133330 is about 12455.2531086285. The cubic root of 155133330 is about 537.3225143219.

Adding to 155133330 its reverse (33331551), we get a palindrome (188464881).

The spelling of 155133330 in words is "one hundred fifty-five million, one hundred thirty-three thousand, three hundred thirty".