505355533 has 2 divisors, whose sum is σ = 505355534. Its totient is φ = 505355532.

The previous prime is 505355531. The next prime is 505355561. The reversal of 505355533 is 335553505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 463196484 + 42159049 = 21522^2 + 6493^2 .

It is a cyclic number.

It is not a de Polignac number, because 505355533 - 2¹ = 505355531 is a prime.

Together with 505355531, it forms a pair of twin primes.

It is equal to p_26622592 and since 505355533 and 26622592 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505355531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252677766 + 252677767.

It is an arithmetic number, because the mean of its divisors is an integer number (252677767).

Almost surely, 2^505355533 is an apocalyptic number.

It is an amenable number.

505355533 is a deficient number, since it is larger than the sum of its proper divisors (1).

505355533 is an equidigital number, since it uses as much as digits as its factorization.

505355533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84375, while the sum is 34.

The square root of 505355533 is about 22480.1141678596. The cubic root of 505355533 is about 796.5242610219.

The spelling of 505355533 in words is "five hundred five million, three hundred fifty-five thousand, five hundred thirty-three".