505046491 has 2 divisors, whose sum is σ = 505046492. Its totient is φ = 505046490.

The previous prime is 505046449. The next prime is 505046497. The reversal of 505046491 is 194640505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505046491 - 2¹¹ = 505044443 is a prime.

It is not a weakly prime, because it can be changed into another prime (505046497) 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, 252523245 + 252523246.

It is an arithmetic number, because the mean of its divisors is an integer number (252523246).

Almost surely, 2^505046491 is an apocalyptic number.

505046491 is a deficient number, since it is larger than the sum of its proper divisors (1).

505046491 is an equidigital number, since it uses as much as digits as its factorization.

505046491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 505046491 is about 22473.2394416114. The cubic root of 505046491 is about 796.3618607381.

Adding to 505046491 its reverse (194640505), we get a palindrome (699686996).

The spelling of 505046491 in words is "five hundred five million, forty-six thousand, four hundred ninety-one".