224402621 has 4 divisors (see below), whose sum is σ = 224432700. Its totient is φ = 224372544.

The previous prime is 224402617. The next prime is 224402623. The reversal of 224402621 is 126204422.

224402621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 136305625 + 88096996 = 11675^2 + 9386^2 .

It is a cyclic number.

It is not a de Polignac number, because 224402621 - 2² = 224402617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224402623) 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, 5525 + ... + 21893.

It is an arithmetic number, because the mean of its divisors is an integer number (56108175).

Almost surely, 2^224402621 is an apocalyptic number.

It is an amenable number.

224402621 is a deficient number, since it is larger than the sum of its proper divisors (30079).

224402621 is a wasteful number, since it uses less digits than its factorization.

224402621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30078.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 224402621 is about 14980.0741319928. The cubic root of 224402621 is about 607.6814439929.

The spelling of 224402621 in words is "two hundred twenty-four million, four hundred two thousand, six hundred twenty-one".