155332212 has 48 divisors (see below), whose sum is σ = 415992192. Its totient is φ = 44190720.

The previous prime is 155332193. The next prime is 155332223. The reversal of 155332212 is 212233551.

It is a happy number.

155332212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 16408 + ... + 24080.

It is an arithmetic number, because the mean of its divisors is an integer number (8666504).

Almost surely, 2^155332212 is an apocalyptic number.

155332212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155332212 is an abundant number, since it is smaller than the sum of its proper divisors (260659980).

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

155332212 is a wasteful number, since it uses less digits than its factorization.

155332212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928 (or 7926 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 155332212 is about 12463.2344116606. The cubic root of 155332212 is about 537.5520333258.

Adding to 155332212 its reverse (212233551), we get a palindrome (367565763).

The spelling of 155332212 in words is "one hundred fifty-five million, three hundred thirty-two thousand, two hundred twelve".