224213477 has 2 divisors, whose sum is σ = 224213478. Its totient is φ = 224213476.

The previous prime is 224213449. The next prime is 224213497. The reversal of 224213477 is 774312422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223622116 + 591361 = 14954^2 + 769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224213477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224213497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112106738 + 112106739.

It is an arithmetic number, because the mean of its divisors is an integer number (112106739).

Almost surely, 2^224213477 is an apocalyptic number.

It is an amenable number.

224213477 is a deficient number, since it is larger than the sum of its proper divisors (1).

224213477 is an equidigital number, since it uses as much as digits as its factorization.

224213477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 32.

The square root of 224213477 is about 14973.7596147394. The cubic root of 224213477 is about 607.5106622570.

Adding to 224213477 its reverse (774312422), we get a palindrome (998525899).

It can be divided in two parts, 224213 and 477, that multiplied together give a palindrome (106949601).

The spelling of 224213477 in words is "two hundred twenty-four million, two hundred thirteen thousand, four hundred seventy-seven".