4781563 has 4 divisors (see below), whose sum is σ = 4787640. Its totient is φ = 4775488.

The previous prime is 4781561. The next prime is 4781587. The reversal of 4781563 is 3651874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3651874 = 2 ⋅1825937.

It is a cyclic number.

It is not a de Polignac number, because 4781563 - 2¹ = 4781561 is a prime.

It is a Duffinian number.

4781563 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4781561) 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, 1645 + ... + 3502.

It is an arithmetic number, because the mean of its divisors is an integer number (1196910).

Almost surely, 2^4781563 is an apocalyptic number.

4781563 is a deficient number, since it is larger than the sum of its proper divisors (6077).

4781563 is an equidigital number, since it uses as much as digits as its factorization.

4781563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076.

The product of its digits is 20160, while the sum is 34.

The square root of 4781563 is about 2186.6785314719. The cubic root of 4781563 is about 168.4702786087.

The spelling of 4781563 in words is "four million, seven hundred eighty-one thousand, five hundred sixty-three".