505423433 has 2 divisors, whose sum is σ = 505423434. Its totient is φ = 505423432.

The previous prime is 505423417. The next prime is 505423469. The reversal of 505423433 is 334324505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317267344 + 188156089 = 17812^2 + 13717^2 .

It is a cyclic number.

It is not a de Polignac number, because 505423433 - 2⁴ = 505423417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505423396 and 505423405.

It is not a weakly prime, because it can be changed into another prime (505423403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252711716 + 252711717.

It is an arithmetic number, because the mean of its divisors is an integer number (252711717).

Almost surely, 2^505423433 is an apocalyptic number.

It is an amenable number.

505423433 is a deficient number, since it is larger than the sum of its proper divisors (1).

505423433 is an equidigital number, since it uses as much as digits as its factorization.

505423433 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 29.

The square root of 505423433 is about 22481.6243407811. The cubic root of 505423433 is about 796.5599333171.

Adding to 505423433 its reverse (334324505), we get a palindrome (839747938).

The spelling of 505423433 in words is "five hundred five million, four hundred twenty-three thousand, four hundred thirty-three".