155052172 has 48 divisors (see below), whose sum is σ = 316800288. Its totient is φ = 65617920.

The previous prime is 155052169. The next prime is 155052181. The reversal of 155052172 is 271250551.

155052172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×155052172³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155052172.

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, 71488 + ... + 73624.

It is an arithmetic number, because the mean of its divisors is an integer number (6600006).

Almost surely, 2^155052172 is an apocalyptic number.

It is an amenable number.

155052172 is an abundant number, since it is smaller than the sum of its proper divisors (161748116).

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

155052172 is a wasteful number, since it uses less digits than its factorization.

155052172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2264 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 155052172 is about 12451.9946996455. The cubic root of 155052172 is about 537.2287978882.

The spelling of 155052172 in words is "one hundred fifty-five million, fifty-two thousand, one hundred seventy-two".