155551133 has 8 divisors (see below), whose sum is σ = 156690720. Its totient is φ = 154416240.

The previous prime is 155551129. The next prime is 155551141. The reversal of 155551133 is 331155551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155551133 - 2² = 155551129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155551096 and 155551105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155551433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 88166 + ... + 89912.

It is an arithmetic number, because the mean of its divisors is an integer number (19586340).

Almost surely, 2^155551133 is an apocalyptic number.

It is an amenable number.

155551133 is a deficient number, since it is larger than the sum of its proper divisors (1139587).

155551133 is a wasteful number, since it uses less digits than its factorization.

155551133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347.

The product of its digits is 5625, while the sum is 29.

The square root of 155551133 is about 12472.0139913328. The cubic root of 155551133 is about 537.8044518567.

The spelling of 155551133 in words is "one hundred fifty-five million, five hundred fifty-one thousand, one hundred thirty-three".