855424481 has 2 divisors, whose sum is σ = 855424482. Its totient is φ = 855424480.

The previous prime is 855424469. The next prime is 855424511. The reversal of 855424481 is 184424558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 805651456 + 49773025 = 28384^2 + 7055^2 .

It is a cyclic number.

It is not a de Polignac number, because 855424481 - 2¹⁴ = 855408097 is a prime.

It is a super-2 number, since 2×855424481² = 1463502085388238722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (855424981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427712240 + 427712241.

It is an arithmetic number, because the mean of its divisors is an integer number (427712241).

Almost surely, 2^855424481 is an apocalyptic number.

It is an amenable number.

855424481 is a deficient number, since it is larger than the sum of its proper divisors (1).

855424481 is an equidigital number, since it uses as much as digits as its factorization.

855424481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204800, while the sum is 41.

The square root of 855424481 is about 29247.6406056967. The cubic root of 855424481 is about 949.2790397012.

The spelling of 855424481 in words is "eight hundred fifty-five million, four hundred twenty-four thousand, four hundred eighty-one".