11881355 has 4 divisors (see below), whose sum is σ = 14257632. Its totient is φ = 9505080.

The previous prime is 11881343. The next prime is 11881357. The reversal of 11881355 is 55318811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11881355 - 2¹⁶ = 11815819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11881357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188131 + ... + 1188140.

It is an arithmetic number, because the mean of its divisors is an integer number (3564408).

Almost surely, 2^11881355 is an apocalyptic number.

11881355 is a deficient number, since it is larger than the sum of its proper divisors (2376277).

11881355 is an equidigital number, since it uses as much as digits as its factorization.

11881355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376276.

The product of its digits is 4800, while the sum is 32.

The square root of 11881355 is about 3446.9341450048. The cubic root of 11881355 is about 228.1858224010.

The spelling of 11881355 in words is "eleven million, eight hundred eighty-one thousand, three hundred fifty-five".