227504813 has 2 divisors, whose sum is σ = 227504814. Its totient is φ = 227504812.

The previous prime is 227504741. The next prime is 227504819. The reversal of 227504813 is 318405722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197177764 + 30327049 = 14042^2 + 5507^2 .

It is a cyclic number.

It is not a de Polignac number, because 227504813 - 2¹⁸ = 227242669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 227504813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227504819) 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, 113752406 + 113752407.

It is an arithmetic number, because the mean of its divisors is an integer number (113752407).

Almost surely, 2^227504813 is an apocalyptic number.

It is an amenable number.

227504813 is a deficient number, since it is larger than the sum of its proper divisors (1).

227504813 is an equidigital number, since it uses as much as digits as its factorization.

227504813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 227504813 is about 15083.2626775509. The cubic root of 227504813 is about 610.4688798482.

Subtracting 227504813 from its reverse (318405722), we obtain a palindrome (90900909).

The spelling of 227504813 in words is "two hundred twenty-seven million, five hundred four thousand, eight hundred thirteen".