2129563 has 4 divisors (see below), whose sum is σ = 2141640. Its totient is φ = 2117488.

The previous prime is 2129551. The next prime is 2129579. The reversal of 2129563 is 3659212.

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 2129563 - 2⁹ = 2129051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2129513) 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, 5770 + ... + 6127.

It is an arithmetic number, because the mean of its divisors is an integer number (535410).

2^2129563 is an apocalyptic number.

2129563 is a deficient number, since it is larger than the sum of its proper divisors (12077).

2129563 is a wasteful number, since it uses less digits than its factorization.

2129563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12076.

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

The square root of 2129563 is about 1459.3022305198. The cubic root of 2129563 is about 128.6560353761.

It can be divided in two parts, 21 and 29563, that added together give a square (29584 = 172²).

The spelling of 2129563 in words is "two million, one hundred twenty-nine thousand, five hundred sixty-three".