13440155 has 8 divisors (see below), whose sum is σ = 16218384. Its totient is φ = 10692000.

The previous prime is 13440121. The next prime is 13440173. The reversal of 13440155 is 55104431.

13440155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13440155 - 2¹⁴ = 13423771 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13440155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6521 + ... + 8330.

It is an arithmetic number, because the mean of its divisors is an integer number (2027298).

Almost surely, 2^13440155 is an apocalyptic number.

13440155 is a deficient number, since it is larger than the sum of its proper divisors (2778229).

13440155 is a wasteful number, since it uses less digits than its factorization.

13440155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15037.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 13440155 is about 3666.0816957618. The cubic root of 13440155 is about 237.7577921029.

Adding to 13440155 its reverse (55104431), we get a palindrome (68544586).

The spelling of 13440155 in words is "thirteen million, four hundred forty thousand, one hundred fifty-five".