155916 has 36 divisors (see below), whose sum is σ = 406224. Its totient is φ = 50400.

The previous prime is 155893. The next prime is 155921. The reversal of 155916 is 619551.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 155916.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2161 + ... + 2231.

It is an arithmetic number, because the mean of its divisors is an integer number (11284).

2¹⁵⁵⁹¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203112).

155916 is an abundant number, since it is smaller than the sum of its proper divisors (250308).

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

155916 is a wasteful number, since it uses less digits than its factorization.

155916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 137 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

The square root of 155916 is about 394.8620012105. The cubic root of 155916 is about 53.8224622096.

The spelling of 155916 in words is "one hundred fifty-five thousand, nine hundred sixteen".