2791563 has 16 divisors (see below), whose sum is σ = 3852576. Its totient is φ = 1797120.

The previous prime is 2791561. The next prime is 2791577. The reversal of 2791563 is 3651972.

It is not a de Polignac number, because 2791563 - 2¹ = 2791561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2791561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15333 + ... + 15513.

It is an arithmetic number, because the mean of its divisors is an integer number (240786).

2^2791563 is an apocalyptic number.

2791563 is a deficient number, since it is larger than the sum of its proper divisors (1061013).

2791563 is a wasteful number, since it uses less digits than its factorization.

2791563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its digits is 11340, while the sum is 33.

The square root of 2791563 is about 1670.7971151519. The cubic root of 2791563 is about 140.8042654043.

The spelling of 2791563 in words is "two million, seven hundred ninety-one thousand, five hundred sixty-three".