227481581 has 2 divisors, whose sum is σ = 227481582. Its totient is φ = 227481580.

The previous prime is 227481559. The next prime is 227481629. The reversal of 227481581 is 185184722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220374025 + 7107556 = 14845^2 + 2666^2 .

It is a cyclic number.

It is not a de Polignac number, because 227481581 - 2²⁶ = 160372717 is a prime.

It is a super-2 number, since 2×227481581² = 103495739388519122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227481181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113740790 + 113740791.

It is an arithmetic number, because the mean of its divisors is an integer number (113740791).

Almost surely, 2^227481581 is an apocalyptic number.

It is an amenable number.

227481581 is a deficient number, since it is larger than the sum of its proper divisors (1).

227481581 is an equidigital number, since it uses as much as digits as its factorization.

227481581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 38.

The square root of 227481581 is about 15082.4925327348. The cubic root of 227481581 is about 610.4480994881.

The spelling of 227481581 in words is "two hundred twenty-seven million, four hundred eighty-one thousand, five hundred eighty-one".