224181641 has 4 divisors (see below), whose sum is σ = 225015300. Its totient is φ = 223347984.

The previous prime is 224181637. The next prime is 224181653. The reversal of 224181641 is 146181422.

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 59598400 + 164583241 = 7720^2 + 12829^2 .

It is a cyclic number.

It is not a de Polignac number, because 224181641 - 2² = 224181637 is a prime.

It is a super-2 number, since 2×224181641² = 100514816322905762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224181691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416426 + ... + 416963.

It is an arithmetic number, because the mean of its divisors is an integer number (56253825).

Almost surely, 2^224181641 is an apocalyptic number.

It is an amenable number.

224181641 is a deficient number, since it is larger than the sum of its proper divisors (833659).

224181641 is an equidigital number, since it uses as much as digits as its factorization.

224181641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833658.

The product of its digits is 3072, while the sum is 29.

The square root of 224181641 is about 14972.6965173278. The cubic root of 224181641 is about 607.4819074811.

The spelling of 224181641 in words is "two hundred twenty-four million, one hundred eighty-one thousand, six hundred forty-one".