501996563 has 4 divisors (see below), whose sum is σ = 506966928. Its totient is φ = 497026200.

The previous prime is 501996541. The next prime is 501996569. The reversal of 501996563 is 365699105.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 501996563 - 2⁶ = 501996499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501996569) 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, 2485031 + ... + 2485232.

It is an arithmetic number, because the mean of its divisors is an integer number (126741732).

Almost surely, 2^501996563 is an apocalyptic number.

501996563 is a deficient number, since it is larger than the sum of its proper divisors (4970365).

501996563 is a wasteful number, since it uses less digits than its factorization.

501996563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970364.

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 501996563 is about 22405.2798018681. The cubic root of 501996563 is about 794.7555716532.

The spelling of 501996563 in words is "five hundred one million, nine hundred ninety-six thousand, five hundred sixty-three".