227563381 has 2 divisors, whose sum is σ = 227563382. Its totient is φ = 227563380.

The previous prime is 227563373. The next prime is 227563409. The reversal of 227563381 is 183365722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136188900 + 91374481 = 11670^2 + 9559^2 .

It is a cyclic number.

It is not a de Polignac number, because 227563381 - 2³ = 227563373 is a prime.

It is a super-2 number, since 2×227563381² = 103570184744302322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 227563381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227560381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113781690 + 113781691.

It is an arithmetic number, because the mean of its divisors is an integer number (113781691).

Almost surely, 2^227563381 is an apocalyptic number.

It is an amenable number.

227563381 is a deficient number, since it is larger than the sum of its proper divisors (1).

227563381 is an equidigital number, since it uses as much as digits as its factorization.

227563381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 227563381 is about 15085.2040423721. The cubic root of 227563381 is about 610.5212609725.

It can be divided in two parts, 2275 and 63381, that added together give a palindrome (65656).

The spelling of 227563381 in words is "two hundred twenty-seven million, five hundred sixty-three thousand, three hundred eighty-one".