224500621 has 4 divisors (see below), whose sum is σ = 224586144. Its totient is φ = 224415100.

The previous prime is 224500597. The next prime is 224500643. The reversal of 224500621 is 126005422.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126005422 = 2 ⋅63002711.

It is a cyclic number.

It is not a de Polignac number, because 224500621 - 2¹⁵ = 224467853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224500592 and 224500601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224500681) 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, 38695 + ... + 44116.

It is an arithmetic number, because the mean of its divisors is an integer number (56146536).

Almost surely, 2^224500621 is an apocalyptic number.

It is an amenable number.

224500621 is a deficient number, since it is larger than the sum of its proper divisors (85523).

224500621 is an equidigital number, since it uses as much as digits as its factorization.

224500621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85522.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 224500621 is about 14983.3447867958. The cubic root of 224500621 is about 607.7698923276.

The spelling of 224500621 in words is "two hundred twenty-four million, five hundred thousand, six hundred twenty-one".