11381355 has 12 divisors (see below), whose sum is σ = 19727760. Its totient is φ = 6070032.

The previous prime is 11381353. The next prime is 11381393. The reversal of 11381355 is 55318311.

It is not a de Polignac number, because 11381355 - 2¹ = 11381353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11381353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126415 + ... + 126504.

It is an arithmetic number, because the mean of its divisors is an integer number (1643980).

Almost surely, 2^11381355 is an apocalyptic number.

11381355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11381355 is a deficient number, since it is larger than the sum of its proper divisors (8346405).

11381355 is a wasteful number, since it uses less digits than its factorization.

11381355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252930 (or 252927 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 11381355 is about 3373.6263871389. The cubic root of 11381355 is about 224.9389463976.

Adding to 11381355 its reverse (55318311), we get a palindrome (66699666).

The spelling of 11381355 in words is "eleven million, three hundred eighty-one thousand, three hundred fifty-five".