2881563 has 4 divisors (see below), whose sum is σ = 3842088. Its totient is φ = 1921040.

The previous prime is 2881561. The next prime is 2881573. The reversal of 2881563 is 3651882.

It is a happy number.

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 2881563 - 2¹ = 2881561 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2881561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480258 + ... + 480263.

It is an arithmetic number, because the mean of its divisors is an integer number (960522).

2^2881563 is an apocalyptic number.

2881563 is a deficient number, since it is larger than the sum of its proper divisors (960525).

2881563 is an equidigital number, since it uses as much as digits as its factorization.

2881563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960524.

The product of its digits is 11520, while the sum is 33.

The square root of 2881563 is about 1697.5167156762. The cubic root of 2881563 is about 142.3014656001.

It can be divided in two parts, 288156 and 3, that multiplied together give a palindrome (864468).

The spelling of 2881563 in words is "two million, eight hundred eighty-one thousand, five hundred sixty-three".