505345563 has 6 divisors (see below), whose sum is σ = 729943604. Its totient is φ = 336897036.

The previous prime is 505345559. The next prime is 505345567. The reversal of 505345563 is 365543505.

505345563 is a `hidden beast` number, since 5 + 0 + 53 + 45 + 563 = 666.

It is an interprime number because it is at equal distance from previous prime (505345559) and next prime (505345567).

It is not a de Polignac number, because 505345563 - 2² = 505345559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505345567) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28074745 + ... + 28074762.

Almost surely, 2^505345563 is an apocalyptic number.

505345563 is a deficient number, since it is larger than the sum of its proper divisors (224598041).

505345563 is a wasteful number, since it uses less digits than its factorization.

505345563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56149513 (or 56149510 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

The square root of 505345563 is about 22479.8924152230. The cubic root of 505345563 is about 796.5190228621.

The spelling of 505345563 in words is "five hundred five million, three hundred forty-five thousand, five hundred sixty-three".