13551040 has 112 divisors (see below), whose sum is σ = 35551872. Its totient is φ = 4898816.

The previous prime is 13551037. The next prime is 13551049. The reversal of 13551040 is 4015531.

It is a junction number, because it is equal to n+sod(n) for n = 13550999 and 13551017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551049) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 255654 + ... + 255706.

Almost surely, 2^13551040 is an apocalyptic number.

13551040 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 13551040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17775936).

13551040 is an abundant number, since it is smaller than the sum of its proper divisors (22000832).

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

13551040 is a wasteful number, since it uses less digits than its factorization.

13551040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 124 counting only the distinct ones).

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

The square root of 13551040 is about 3681.1737258652. The cubic root of 13551040 is about 238.4098580071.

Adding to 13551040 its reverse (4015531), we get a palindrome (17566571).

The spelling of 13551040 in words is "thirteen million, five hundred fifty-one thousand, forty".