505510061 has 4 divisors (see below), whose sum is σ = 577725792. Its totient is φ = 433294332.

The previous prime is 505510037. The next prime is 505510069. The reversal of 505510061 is 160015505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505510061 - 2⁶ = 505509997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505510069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36107855 + ... + 36107868.

It is an arithmetic number, because the mean of its divisors is an integer number (144431448).

Almost surely, 2^505510061 is an apocalyptic number.

It is an amenable number.

505510061 is a deficient number, since it is larger than the sum of its proper divisors (72215731).

505510061 is an equidigital number, since it uses as much as digits as its factorization.

505510061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72215730.

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

The square root of 505510061 is about 22483.5508983790. The cubic root of 505510061 is about 796.6054400134.

Adding to 505510061 its reverse (160015505), we get a palindrome (665525566).

The spelling of 505510061 in words is "five hundred five million, five hundred ten thousand, sixty-one".