104493281 has 4 divisors (see below), whose sum is σ = 107864064. Its totient is φ = 101122500.

The previous prime is 104493251. The next prime is 104493299. The reversal of 104493281 is 182394401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 104493281 - 2¹⁰ = 104492257 is a prime.

It is a super-2 number, since 2×104493281² = 21837691548289922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (104493241) 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, 1685345 + ... + 1685406.

It is an arithmetic number, because the mean of its divisors is an integer number (26966016).

Almost surely, 2^104493281 is an apocalyptic number.

It is an amenable number.

104493281 is a deficient number, since it is larger than the sum of its proper divisors (3370783).

104493281 is an equidigital number, since it uses as much as digits as its factorization.

104493281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370782.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 104493281 is about 10222.1955078153. The cubic root of 104493281 is about 471.0092707218.

The spelling of 104493281 in words is "one hundred four million, four hundred ninety-three thousand, two hundred eighty-one".