155312 has 20 divisors (see below), whose sum is σ = 319176. Its totient is φ = 72960.

The previous prime is 155303. The next prime is 155317. The reversal of 155312 is 213551.

155312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (155317) by changing a digit.

155312 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14 + ... + 557.

2¹⁵⁵³¹² is an apocalyptic number.

It is an amenable number.

155312 is an abundant number, since it is smaller than the sum of its proper divisors (163864).

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

155312 is a wasteful number, since it uses less digits than its factorization.

155312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 590 counting only the distinct ones).

The product of its digits is 150, while the sum is 17.

The square root of 155312 is about 394.0964348989. The cubic root of 155312 is about 53.7528716692.

Adding to 155312 its reverse (213551), we get a palindrome (368863).

The spelling of 155312 in words is "one hundred fifty-five thousand, three hundred twelve".