224021453 has 2 divisors, whose sum is σ = 224021454. Its totient is φ = 224021452.

The previous prime is 224021437. The next prime is 224021471. The reversal of 224021453 is 354120422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220284964 + 3736489 = 14842^2 + 1933^2 .

It is a cyclic number.

It is not a de Polignac number, because 224021453 - 2⁴ = 224021437 is a prime.

It is a super-2 number, since 2×224021453² = 100371222808462418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224021353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112010726 + 112010727.

It is an arithmetic number, because the mean of its divisors is an integer number (112010727).

Almost surely, 2^224021453 is an apocalyptic number.

It is an amenable number.

224021453 is a deficient number, since it is larger than the sum of its proper divisors (1).

224021453 is an equidigital number, since it uses as much as digits as its factorization.

224021453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 224021453 is about 14967.3462243646. The cubic root of 224021453 is about 607.3371818346.

Adding to 224021453 its reverse (354120422), we get a palindrome (578141875).

The spelling of 224021453 in words is "two hundred twenty-four million, twenty-one thousand, four hundred fifty-three".