155065172 has 24 divisors (see below), whose sum is σ = 287814912. Its totient is φ = 72943200.

The previous prime is 155065171. The next prime is 155065189. The reversal of 155065172 is 271560551.

155065172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155065171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8204 + ... + 19427.

It is an arithmetic number, because the mean of its divisors is an integer number (11992288).

Almost surely, 2^155065172 is an apocalyptic number.

It is an amenable number.

155065172 is a deficient number, since it is larger than the sum of its proper divisors (132749740).

155065172 is a wasteful number, since it uses less digits than its factorization.

155065172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27719 (or 27717 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 155065172 is about 12452.5166934239. The cubic root of 155065172 is about 537.2438117146.

The spelling of 155065172 in words is "one hundred fifty-five million, sixty-five thousand, one hundred seventy-two".