13550040 has 192 divisors, whose sum is σ = 53164800. Its totient is φ = 2923776.

The previous prime is 13550039. The next prime is 13550057. The reversal of 13550040 is 4005531.

13550040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13549995 and 13550022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47739 + ... + 48021.

It is an arithmetic number, because the mean of its divisors is an integer number (276900).

Almost surely, 2^13550040 is an apocalyptic number.

13550040 is a gapful number since it is divisible by the number (10) 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 13550040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26582400).

13550040 is an abundant number, since it is smaller than the sum of its proper divisors (39614760).

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

13550040 is a wasteful number, since it uses less digits than its factorization.

13550040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 13550040 is about 3681.0378971154. The cubic root of 13550040 is about 238.4039933718.

Adding to 13550040 its reverse (4005531), we get a palindrome (17555571).

The spelling of 13550040 in words is "thirteen million, five hundred fifty thousand, forty".