155988212 has 24 divisors (see below), whose sum is σ = 278517120. Its totient is φ = 76420800.

The previous prime is 155988199. The next prime is 155988223. The reversal of 155988212 is 212889551.

It is a self number, because there is not a number n which added to its sum of digits gives 155988212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85712 + ... + 87512.

It is an arithmetic number, because the mean of its divisors is an integer number (11604880).

Almost surely, 2^155988212 is an apocalyptic number.

It is an amenable number.

155988212 is a deficient number, since it is larger than the sum of its proper divisors (122528908).

155988212 is a wasteful number, since it uses less digits than its factorization.

155988212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231 (or 2229 counting only the distinct ones).

The product of its digits is 57600, while the sum is 41.

The square root of 155988212 is about 12489.5240902126. The cubic root of 155988212 is about 538.3077016129.

The spelling of 155988212 in words is "one hundred fifty-five million, nine hundred eighty-eight thousand, two hundred twelve".