224548813 has 2 divisors, whose sum is σ = 224548814. Its totient is φ = 224548812.

The previous prime is 224548787. The next prime is 224548817. The reversal of 224548813 is 318845422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159213924 + 65334889 = 12618^2 + 8083^2 .

It is a cyclic number.

It is not a de Polignac number, because 224548813 - 2²⁵ = 190994381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224548817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112274406 + 112274407.

It is an arithmetic number, because the mean of its divisors is an integer number (112274407).

Almost surely, 2^224548813 is an apocalyptic number.

It is an amenable number.

224548813 is a deficient number, since it is larger than the sum of its proper divisors (1).

224548813 is an equidigital number, since it uses as much as digits as its factorization.

224548813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 37.

The square root of 224548813 is about 14984.9528861455. The cubic root of 224548813 is about 607.8133778066.

The spelling of 224548813 in words is "two hundred twenty-four million, five hundred forty-eight thousand, eight hundred thirteen".