224872161 has 4 divisors (see below), whose sum is σ = 299829552. Its totient is φ = 149914772.

The previous prime is 224872159. The next prime is 224872181. The reversal of 224872161 is 161278422.

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 224872161 - 2¹ = 224872159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (224872121) 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, 37478691 + ... + 37478696.

It is an arithmetic number, because the mean of its divisors is an integer number (74957388).

Almost surely, 2^224872161 is an apocalyptic number.

It is an amenable number.

224872161 is a deficient number, since it is larger than the sum of its proper divisors (74957391).

224872161 is an equidigital number, since it uses as much as digits as its factorization.

224872161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74957390.

The product of its digits is 10752, while the sum is 33.

The square root of 224872161 is about 14995.7380945387. The cubic root of 224872161 is about 608.1049862348.

The spelling of 224872161 in words is "two hundred twenty-four million, eight hundred seventy-two thousand, one hundred sixty-one".