13550115 has 16 divisors (see below), whose sum is σ = 21778848. Its totient is φ = 7193856.

The previous prime is 13550111. The next prime is 13550123. The reversal of 13550115 is 51105531.

It is not a de Polignac number, because 13550115 - 2² = 13550111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13550091 and 13550100.

It is not an unprimeable number, because it can be changed into a prime (13550111) 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, 1557 + ... + 5433.

It is an arithmetic number, because the mean of its divisors is an integer number (1361178).

Almost surely, 2^13550115 is an apocalyptic number.

13550115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13550115 is a deficient number, since it is larger than the sum of its proper divisors (8228733).

13550115 is a wasteful number, since it uses less digits than its factorization.

13550115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 13550115 is about 3681.0480844455. The cubic root of 13550115 is about 238.4044332295.

Adding to 13550115 its reverse (51105531), we get a palindrome (64655646).

The spelling of 13550115 in words is "thirteen million, five hundred fifty thousand, one hundred fifteen".