155473212 has 12 divisors (see below), whose sum is σ = 362770856. Its totient is φ = 51824400.

The previous prime is 155473163. The next prime is 155473229. The reversal of 155473212 is 212374551.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 155473212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6478039 + ... + 6478062.

Almost surely, 2^155473212 is an apocalyptic number.

155473212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155473212 is an abundant number, since it is smaller than the sum of its proper divisors (207297644).

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

155473212 is a wasteful number, since it uses less digits than its factorization.

155473212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12956108 (or 12956106 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 155473212 is about 12468.8897661340. The cubic root of 155473212 is about 537.7146351744.

The spelling of 155473212 in words is "one hundred fifty-five million, four hundred seventy-three thousand, two hundred twelve".