155516 has 12 divisors (see below), whose sum is σ = 288288. Its totient is φ = 73152.

The previous prime is 155509. The next prime is 155521. The reversal of 155516 is 615551.

It is a junction number, because it is equal to n+sod(n) for n = 155491 and 155500.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 155516.

It is an unprimeable number.

155516 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, 1076 + ... + 1211.

It is an arithmetic number, because the mean of its divisors is an integer number (24024).

155516 is a Friedman number, since it can be written as (1-6^5*5)*(1-5), using all its digits and the basic arithmetic operations.

2¹⁵⁵⁵¹⁶ is an apocalyptic number.

It is an amenable number.

155516 is a deficient number, since it is larger than the sum of its proper divisors (132772).

155516 is a wasteful number, since it uses less digits than its factorization.

155516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308 (or 2306 counting only the distinct ones).

The product of its digits is 750, while the sum is 23.

The square root of 155516 is about 394.3551698659. The cubic root of 155516 is about 53.7763959049.

The spelling of 155516 in words is "one hundred fifty-five thousand, five hundred sixteen".