226187237 has 2 divisors, whose sum is σ = 226187238. Its totient is φ = 226187236.

The previous prime is 226187209. The next prime is 226187239. The reversal of 226187237 is 732781622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159617956 + 66569281 = 12634^2 + 8159^2 .

It is a cyclic number.

It is not a de Polignac number, because 226187237 - 2¹⁴ = 226170853 is a prime.

Together with 226187239, it forms a pair of twin primes.

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 226187237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226187239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113093618 + 113093619.

It is an arithmetic number, because the mean of its divisors is an integer number (113093619).

Almost surely, 2^226187237 is an apocalyptic number.

It is an amenable number.

226187237 is a deficient number, since it is larger than the sum of its proper divisors (1).

226187237 is an equidigital number, since it uses as much as digits as its factorization.

226187237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 226187237 is about 15039.5224990689. The cubic root of 226187237 is about 609.2881034873.

It can be divided in two parts, 2261 and 87237, that added together give a palindrome (89498).

The spelling of 226187237 in words is "two hundred twenty-six million, one hundred eighty-seven thousand, two hundred thirty-seven".