11281855 has 16 divisors (see below), whose sum is σ = 14976864. Its totient is φ = 8104320.

The previous prime is 11281843. The next prime is 11281859. The reversal of 11281855 is 55818211.

It is not a de Polignac number, because 11281855 - 2⁹ = 11281343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60 + ... + 4750.

It is an arithmetic number, because the mean of its divisors is an integer number (936054).

Almost surely, 2^11281855 is an apocalyptic number.

11281855 is a deficient number, since it is larger than the sum of its proper divisors (3695009).

11281855 is a wasteful number, since it uses less digits than its factorization.

11281855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746.

The product of its digits is 3200, while the sum is 31.

The square root of 11281855 is about 3358.8472725029. The cubic root of 11281855 is about 224.2815271353.

The spelling of 11281855 in words is "eleven million, two hundred eighty-one thousand, eight hundred fifty-five".