224265021 has 4 divisors (see below), whose sum is σ = 299020032. Its totient is φ = 149510012.

The previous prime is 224265007. The next prime is 224265043. The reversal of 224265021 is 120562422.

It is a happy number.

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 224265021 - 2¹⁰ = 224263997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224264982 and 224265000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224264021) 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, 37377501 + ... + 37377506.

It is an arithmetic number, because the mean of its divisors is an integer number (74755008).

Almost surely, 2^224265021 is an apocalyptic number.

It is an amenable number.

224265021 is a deficient number, since it is larger than the sum of its proper divisors (74755011).

224265021 is an equidigital number, since it uses as much as digits as its factorization.

224265021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74755010.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 224265021 is about 14975.4806600656. The cubic root of 224265021 is about 607.5572118382.

The spelling of 224265021 in words is "two hundred twenty-four million, two hundred sixty-five thousand, twenty-one".