505015061 has 2 divisors, whose sum is σ = 505015062. Its totient is φ = 505015060.

The previous prime is 505015051. The next prime is 505015067. The reversal of 505015061 is 160510505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450712900 + 54302161 = 21230^2 + 7369^2 .

It is a cyclic number.

It is not a de Polignac number, because 505015061 - 2⁶ = 505014997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505015067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252507530 + 252507531.

It is an arithmetic number, because the mean of its divisors is an integer number (252507531).

Almost surely, 2^505015061 is an apocalyptic number.

It is an amenable number.

505015061 is a deficient number, since it is larger than the sum of its proper divisors (1).

505015061 is an equidigital number, since it uses as much as digits as its factorization.

505015061 is an evil number, because the sum of its binary digits is even.

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

The square root of 505015061 is about 22472.5401545976. The cubic root of 505015061 is about 796.3453406929.

Adding to 505015061 its reverse (160510505), we get a palindrome (665525566).

The spelling of 505015061 in words is "five hundred five million, fifteen thousand, sixty-one".