227217901 has 2 divisors, whose sum is σ = 227217902. Its totient is φ = 227217900.

The previous prime is 227217899. The next prime is 227217917. The reversal of 227217901 is 109712722.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214622500 + 12595401 = 14650^2 + 3549^2 .

It is a cyclic number.

It is not a de Polignac number, because 227217901 - 2¹ = 227217899 is a prime.

Together with 227217899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227217931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113608950 + 113608951.

It is an arithmetic number, because the mean of its divisors is an integer number (113608951).

Almost surely, 2^227217901 is an apocalyptic number.

It is an amenable number.

227217901 is a deficient number, since it is larger than the sum of its proper divisors (1).

227217901 is an equidigital number, since it uses as much as digits as its factorization.

227217901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 227217901 is about 15073.7487374574. The cubic root of 227217901 is about 610.2121460446.

The spelling of 227217901 in words is "two hundred twenty-seven million, two hundred seventeen thousand, nine hundred one".