226355491 has 2 divisors, whose sum is σ = 226355492. Its totient is φ = 226355490.

The previous prime is 226355473. The next prime is 226355497. The reversal of 226355491 is 194553622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 226355491 - 2⁹ = 226354979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 226355491.

It is not a weakly prime, because it can be changed into another prime (226355497) 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, 113177745 + 113177746.

It is an arithmetic number, because the mean of its divisors is an integer number (113177746).

Almost surely, 2^226355491 is an apocalyptic number.

226355491 is a deficient number, since it is larger than the sum of its proper divisors (1).

226355491 is an equidigital number, since it uses as much as digits as its factorization.

226355491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 226355491 is about 15045.1151873291. The cubic root of 226355491 is about 609.4391431792.

The spelling of 226355491 in words is "two hundred twenty-six million, three hundred fifty-five thousand, four hundred ninety-one".