50001563 has 4 divisors (see below), whose sum is σ = 52175568. Its totient is φ = 47827560.

The previous prime is 50001557. The next prime is 50001577. The reversal of 50001563 is 36510005.

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 50001563 - 2⁶ = 50001499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50001533) 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, 1086968 + ... + 1087013.

It is an arithmetic number, because the mean of its divisors is an integer number (13043892).

Almost surely, 2^50001563 is an apocalyptic number.

50001563 is a deficient number, since it is larger than the sum of its proper divisors (2174005).

50001563 is a wasteful number, since it uses less digits than its factorization.

50001563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174004.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 50001563 is about 7071.1783317917. The cubic root of 50001563 is about 368.4069885849.

Adding to 50001563 its reverse (36510005), we get a palindrome (86511568).

The spelling of 50001563 in words is "fifty million, one thousand, five hundred sixty-three".