227485981 has 2 divisors, whose sum is σ = 227485982. Its totient is φ = 227485980.

The previous prime is 227485963. The next prime is 227486003. The reversal of 227485981 is 189584722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225900900 + 1585081 = 15030^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 227485981 - 2⁵ = 227485949 is a prime.

It is a super-2 number, since 2×227485981² = 103499743103064722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227485901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113742990 + 113742991.

It is an arithmetic number, because the mean of its divisors is an integer number (113742991).

Almost surely, 2^227485981 is an apocalyptic number.

It is an amenable number.

227485981 is a deficient number, since it is larger than the sum of its proper divisors (1).

227485981 is an equidigital number, since it uses as much as digits as its factorization.

227485981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 227485981 is about 15082.6383965141. The cubic root of 227485981 is about 610.4520352709.

The spelling of 227485981 in words is "two hundred twenty-seven million, four hundred eighty-five thousand, nine hundred eighty-one".