505510069 has 2 divisors, whose sum is σ = 505510070. Its totient is φ = 505510068.

The previous prime is 505510037. The next prime is 505510081. The reversal of 505510069 is 960015505.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319051044 + 186459025 = 17862^2 + 13655^2 .

It is a cyclic number.

It is not a de Polignac number, because 505510069 - 2⁵ = 505510037 is a prime.

It is a super-2 number, since 2×505510069² = 511080859720769522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505510069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505514069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252755034 + 252755035.

It is an arithmetic number, because the mean of its divisors is an integer number (252755035).

Almost surely, 2^505510069 is an apocalyptic number.

It is an amenable number.

505510069 is a deficient number, since it is larger than the sum of its proper divisors (1).

505510069 is an equidigital number, since it uses as much as digits as its factorization.

505510069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 505510069 is about 22483.5510762869. The cubic root of 505510069 is about 796.6054442156.

The spelling of 505510069 in words is "five hundred five million, five hundred ten thousand, sixty-nine".