505105061 has 2 divisors, whose sum is σ = 505105062. Its totient is φ = 505105060.

The previous prime is 505105057. The next prime is 505105109. The reversal of 505105061 is 160501505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 495062500 + 10042561 = 22250^2 + 3169^2 .

It is a cyclic number.

It is not a de Polignac number, because 505105061 - 2² = 505105057 is a prime.

It is a super-2 number, since 2×505105061² = 510262245295627442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505105261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252552530 + 252552531.

It is an arithmetic number, because the mean of its divisors is an integer number (252552531).

Almost surely, 2^505105061 is an apocalyptic number.

It is an amenable number.

505105061 is a deficient number, since it is larger than the sum of its proper divisors (1).

505105061 is an equidigital number, since it uses as much as digits as its factorization.

505105061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 505105061 is about 22474.5425092481. The cubic root of 505105061 is about 796.3926441162.

Adding to 505105061 its reverse (160501505), we get a palindrome (665606566).

The spelling of 505105061 in words is "five hundred five million, one hundred five thousand, sixty-one".