13155516 has 72 divisors (see below), whose sum is σ = 36691200. Its totient is φ = 3941280.

The previous prime is 13155503. The next prime is 13155529. The reversal of 13155516 is 61555131.

It is an interprime number because it is at equal distance from previous prime (13155503) and next prime (13155529).

It is a self number, because there is not a number n which added to its sum of digits gives 13155516.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54925 + ... + 55163.

It is an arithmetic number, because the mean of its divisors is an integer number (509600).

Almost surely, 2^13155516 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 13155516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18345600).

13155516 is an abundant number, since it is smaller than the sum of its proper divisors (23535684).

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

13155516 is a wasteful number, since it uses less digits than its factorization.

13155516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 394 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 13155516 is about 3627.0533494836. The cubic root of 13155516 is about 236.0673704051.

The spelling of 13155516 in words is "thirteen million, one hundred fifty-five thousand, five hundred sixteen".