506807305 has 4 divisors (see below), whose sum is σ = 608168772. Its totient is φ = 405445840.

The previous prime is 506807303. The next prime is 506807321. The reversal of 506807305 is 503708605.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503708605 = 5 ⋅100741721.

It can be written as a sum of positive squares in 2 ways, for example, as 185286544 + 321520761 = 13612^2 + 17931^2 .

It is not a de Polignac number, because 506807305 - 2¹ = 506807303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506807303) 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, 50680726 + ... + 50680735.

It is an arithmetic number, because the mean of its divisors is an integer number (152042193).

Almost surely, 2^506807305 is an apocalyptic number.

It is an amenable number.

506807305 is a deficient number, since it is larger than the sum of its proper divisors (101361467).

506807305 is a wasteful number, since it uses less digits than its factorization.

506807305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101361466.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 506807305 is about 22512.3811490477. The cubic root of 506807305 is about 797.2862763931.

The spelling of 506807305 in words is "five hundred six million, eight hundred seven thousand, three hundred five".