13550140 has 24 divisors (see below), whose sum is σ = 29225952. Its totient is φ = 5273280.

The previous prime is 13550129. The next prime is 13550143. The reversal of 13550140 is 4105531.

13550140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8416 + ... + 9895.

It is an arithmetic number, because the mean of its divisors is an integer number (1217748).

Almost surely, 2^13550140 is an apocalyptic number.

13550140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13550140 is an abundant number, since it is smaller than the sum of its proper divisors (15675812).

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

13550140 is a wasteful number, since it uses less digits than its factorization.

13550140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18357 (or 18355 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 13550140 is about 3681.0514802159. The cubic root of 13550140 is about 238.4045798484.

Adding to 13550140 its reverse (4105531), we get a palindrome (17655671).

The spelling of 13550140 in words is "thirteen million, five hundred fifty thousand, one hundred forty".