224420181 has 4 divisors (see below), whose sum is σ = 299226912. Its totient is φ = 149613452.

The previous prime is 224420167. The next prime is 224420197. The reversal of 224420181 is 181024422.

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 224420181 - 2⁵ = 224420149 is a prime.

It is a super-2 number, since 2×224420181² = 100728835280145522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224421181) 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, 37403361 + ... + 37403366.

It is an arithmetic number, because the mean of its divisors is an integer number (74806728).

Almost surely, 2^224420181 is an apocalyptic number.

It is an amenable number.

224420181 is a deficient number, since it is larger than the sum of its proper divisors (74806731).

224420181 is an equidigital number, since it uses as much as digits as its factorization.

224420181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74806730.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 224420181 is about 14980.6602324464. The cubic root of 224420181 is about 607.6972943839.

The spelling of 224420181 in words is "two hundred twenty-four million, four hundred twenty thousand, one hundred eighty-one".