505395361 has 3 divisors (see below), whose sum is σ = 505417843. Its totient is φ = 505372880.

The previous prime is 505395349. The next prime is 505395367. The reversal of 505395361 is 163593505.

The square root of 505395361 is 22481.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 19633761 + 485761600 = 4431^2 + 22040^2 .

It is not a de Polignac number, because 505395361 - 2¹¹ = 505393313 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 505395361.

It is not an unprimeable number, because it can be changed into a prime (505395367) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11241 + ... + 33721.

Almost surely, 2^505395361 is an apocalyptic number.

505395361 is the 22481-st square number.

505395361 is the 11241-st centered octagonal number.

It is an amenable number.

505395361 is a deficient number, since it is larger than the sum of its proper divisors (22482).

505395361 is an frugal number, since it uses more digits than its factorization.

505395361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44962 (or 22481 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 37.

The cubic root of 505395361 is about 796.5451856534.

The spelling of 505395361 in words is "five hundred five million, three hundred ninety-five thousand, three hundred sixty-one".