205822481 has 2 divisors, whose sum is σ = 205822482. Its totient is φ = 205822480.

The previous prime is 205822471. The next prime is 205822499. The reversal of 205822481 is 184228502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194323600 + 11498881 = 13940^2 + 3391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205822481 is a prime.

It is a super-2 number, since 2×205822481² = 84725787369990722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (205822471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102911240 + 102911241.

It is an arithmetic number, because the mean of its divisors is an integer number (102911241).

Almost surely, 2^205822481 is an apocalyptic number.

It is an amenable number.

205822481 is a deficient number, since it is larger than the sum of its proper divisors (1).

205822481 is an equidigital number, since it uses as much as digits as its factorization.

205822481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 205822481 is about 14346.5145941445. The cubic root of 205822481 is about 590.4243628987.

The spelling of 205822481 in words is "two hundred five million, eight hundred twenty-two thousand, four hundred eighty-one".