505510073 has 4 divisors (see below), whose sum is σ = 507105060. Its totient is φ = 503915088.

The previous prime is 505510069. The next prime is 505510081. The reversal of 505510073 is 370015505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 294911929 + 210598144 = 17173^2 + 14512^2 .

It is a cyclic number.

It is not a de Polignac number, because 505510073 - 2² = 505510069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505516073) 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, 797018 + ... + 797651.

It is an arithmetic number, because the mean of its divisors is an integer number (126776265).

Almost surely, 2^505510073 is an apocalyptic number.

It is an amenable number.

505510073 is a deficient number, since it is larger than the sum of its proper divisors (1594987).

505510073 is a wasteful number, since it uses less digits than its factorization.

505510073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594986.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 505510073 is about 22483.5511652408. The cubic root of 505510073 is about 796.6054463167.

Adding to 505510073 its reverse (370015505), we get a palindrome (875525578).

The spelling of 505510073 in words is "five hundred five million, five hundred ten thousand, seventy-three".