2921563 has 2 divisors, whose sum is σ = 2921564. Its totient is φ = 2921562.

The previous prime is 2921561. The next prime is 2921591. The reversal of 2921563 is 3651292.

2921563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (2921591) can be obtained adding 2921563 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2921563 - 2¹ = 2921561 is a prime.

Together with 2921561, it forms a pair of twin primes.

2921563 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2921561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460781 + 1460782.

It is an arithmetic number, because the mean of its divisors is an integer number (1460782).

2^2921563 is an apocalyptic number.

2921563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2921563 is an equidigital number, since it uses as much as digits as its factorization.

2921563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 2921563 is about 1709.2580261622. The cubic root of 2921563 is about 142.9568879117.

The spelling of 2921563 in words is "two million, nine hundred twenty-one thousand, five hundred sixty-three".