505523365 has 4 divisors (see below), whose sum is σ = 606628044. Its totient is φ = 404418688.

The previous prime is 505523363. The next prime is 505523393. The reversal of 505523365 is 563325505.

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 346183236 + 159340129 = 18606^2 + 12623^2 .

It is a cyclic number.

It is not a de Polignac number, because 505523365 - 2¹ = 505523363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505523365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505523363) 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, 50552332 + ... + 50552341.

It is an arithmetic number, because the mean of its divisors is an integer number (151657011).

Almost surely, 2^505523365 is an apocalyptic number.

It is an amenable number.

505523365 is a deficient number, since it is larger than the sum of its proper divisors (101104679).

505523365 is a wasteful number, since it uses less digits than its factorization.

505523365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101104678.

The product of its (nonzero) digits is 67500, while the sum is 34.

The square root of 505523365 is about 22483.8467571721. The cubic root of 505523365 is about 796.6124282988.

The spelling of 505523365 in words is "five hundred five million, five hundred twenty-three thousand, three hundred sixty-five".