12281583 has 4 divisors (see below), whose sum is σ = 16375448. Its totient is φ = 8187720.

The previous prime is 12281573. The next prime is 12281597. The reversal of 12281583 is 38518221.

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

It is not a de Polignac number, because 12281583 - 2⁶ = 12281519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12281583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12281573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2046928 + ... + 2046933.

It is an arithmetic number, because the mean of its divisors is an integer number (4093862).

Almost surely, 2^12281583 is an apocalyptic number.

12281583 is a deficient number, since it is larger than the sum of its proper divisors (4093865).

12281583 is an equidigital number, since it uses as much as digits as its factorization.

12281583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093864.

The product of its digits is 3840, while the sum is 30.

The square root of 12281583 is about 3504.5089527636. The cubic root of 12281583 is about 230.7197553508.

The spelling of 12281583 in words is "twelve million, two hundred eighty-one thousand, five hundred eighty-three".