226130581 has 2 divisors, whose sum is σ = 226130582. Its totient is φ = 226130580.

The previous prime is 226130551. The next prime is 226130659. The reversal of 226130581 is 185031622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191379556 + 34751025 = 13834^2 + 5895^2 .

It is a cyclic number.

It is not a de Polignac number, because 226130581 - 2⁷ = 226130453 is a prime.

It is a super-2 number, since 2×226130581² = 102270079326795122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226130501) 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, 113065290 + 113065291.

It is an arithmetic number, because the mean of its divisors is an integer number (113065291).

Almost surely, 2^226130581 is an apocalyptic number.

It is an amenable number.

226130581 is a deficient number, since it is larger than the sum of its proper divisors (1).

226130581 is an equidigital number, since it uses as much as digits as its factorization.

226130581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 226130581 is about 15037.6388106644. The cubic root of 226130581 is about 609.2372271870.

The spelling of 226130581 in words is "two hundred twenty-six million, one hundred thirty thousand, five hundred eighty-one".