11380155 has 16 divisors (see below), whose sum is σ = 18293280. Its totient is φ = 6041088.

The previous prime is 11380141. The next prime is 11380181. The reversal of 11380155 is 55108311.

11380155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11380155 - 2⁴ = 11380139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1779 + ... + 5091.

It is an arithmetic number, because the mean of its divisors is an integer number (1143330).

Almost surely, 2^11380155 is an apocalyptic number.

11380155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11380155 is a deficient number, since it is larger than the sum of its proper divisors (6913125).

11380155 is a wasteful number, since it uses less digits than its factorization.

11380155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 11380155 is about 3373.4485322886. The cubic root of 11380155 is about 224.9310405954.

Adding to 11380155 its reverse (55108311), we get a palindrome (66488466).

The spelling of 11380155 in words is "eleven million, three hundred eighty thousand, one hundred fifty-five".