155712 has 28 divisors (see below), whose sum is σ = 412496. Its totient is φ = 51840.

The previous prime is 155707. The next prime is 155717. The reversal of 155712 is 217551.

It is an interprime number because it is at equal distance from previous prime (155707) and next prime (155717).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 155712.

It is not an unprimeable number, because it can be changed into a prime (155717) by changing a digit.

155712 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, 214 + ... + 597.

It is an arithmetic number, because the mean of its divisors is an integer number (14732).

2¹⁵⁵⁷¹² is an apocalyptic number.

155712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155712 is an abundant number, since it is smaller than the sum of its proper divisors (256784).

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

155712 is an equidigital number, since it uses as much as digits as its factorization.

155712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 816 counting only the distinct ones).

The product of its digits is 350, while the sum is 21.

The square root of 155712 is about 394.6035985644. The cubic root of 155712 is about 53.7989782516.

The spelling of 155712 in words is "one hundred fifty-five thousand, seven hundred twelve".