224440081 has 4 divisors (see below), whose sum is σ = 225250612. Its totient is φ = 223629552.

The previous prime is 224440009. The next prime is 224440123. The reversal of 224440081 is 180044422.

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

It can be written as a sum of positive squares in 2 ways, for example, as 99201600 + 125238481 = 9960^2 + 11191^2 .

It is a cyclic number.

It is not a de Polignac number, because 224440081 - 2⁹ = 224439569 is a prime.

It is a super-2 number, since 2×224440081² = 100746699918573122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224440981) 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, 404850 + ... + 405403.

It is an arithmetic number, because the mean of its divisors is an integer number (56312653).

Almost surely, 2^224440081 is an apocalyptic number.

It is an amenable number.

224440081 is a deficient number, since it is larger than the sum of its proper divisors (810531).

224440081 is an equidigital number, since it uses as much as digits as its factorization.

224440081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810530.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 224440081 is about 14981.3244074080. The cubic root of 224440081 is about 607.7152559574.

The spelling of 224440081 in words is "two hundred twenty-four million, four hundred forty thousand, eighty-one".