506267765 has 4 divisors (see below), whose sum is σ = 607521324. Its totient is φ = 405014208.

The previous prime is 506267737. The next prime is 506267777. The reversal of 506267765 is 567762605.

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 327537604 + 178730161 = 18098^2 + 13369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506267765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50626772 + ... + 50626781.

It is an arithmetic number, because the mean of its divisors is an integer number (151880331).

Almost surely, 2^506267765 is an apocalyptic number.

It is an amenable number.

506267765 is a deficient number, since it is larger than the sum of its proper divisors (101253559).

506267765 is a wasteful number, since it uses less digits than its factorization.

506267765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101253558.

The product of its (nonzero) digits is 529200, while the sum is 44.

The square root of 506267765 is about 22500.3947743145. The cubic root of 506267765 is about 797.0032493110.

It can be divided in two parts, 5062 and 67765, that added together give a palindrome (72827).

The spelling of 506267765 in words is "five hundred six million, two hundred sixty-seven thousand, seven hundred sixty-five".