2159563 has 4 divisors (see below), whose sum is σ = 2468080. Its totient is φ = 1851048.

The previous prime is 2159557. The next prime is 2159609. The reversal of 2159563 is 3659512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2159563 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2159513) 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, 154248 + ... + 154261.

It is an arithmetic number, because the mean of its divisors is an integer number (617020).

2^2159563 is an apocalyptic number.

2159563 is a deficient number, since it is larger than the sum of its proper divisors (308517).

2159563 is an equidigital number, since it uses as much as digits as its factorization.

2159563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308516.

The product of its digits is 8100, while the sum is 31.

The square root of 2159563 is about 1469.5451677305. The cubic root of 2159563 is about 129.2573633328.

The spelling of 2159563 in words is "two million, one hundred fifty-nine thousand, five hundred sixty-three".