13545216 has 54 divisors (see below), whose sum is σ = 39060840. Its totient is φ = 4514304.

The previous prime is 13545199. The next prime is 13545227. The reversal of 13545216 is 61254531.

13545216 is a `hidden beast` number, since 135 + 4 + 521 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 13545216.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 636 + ... + 5243.

Almost surely, 2^13545216 is an apocalyptic number.

13545216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13545216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19530420).

13545216 is an abundant number, since it is smaller than the sum of its proper divisors (25515624).

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

13545216 is an equidigital number, since it uses as much as digits as its factorization.

13545216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5901 (or 5884 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 13545216 is about 3680.3825888079. The cubic root of 13545216 is about 238.3756983171.

Adding to 13545216 its reverse (61254531), we get a palindrome (74799747).

The spelling of 13545216 in words is "thirteen million, five hundred forty-five thousand, two hundred sixteen".