2171132563 has 4 divisors (see below), whose sum is σ = 2207931480. Its totient is φ = 2134333648.

The previous prime is 2171132539. The next prime is 2171132569. The reversal of 2171132563 is 3652311712.

It is a happy number.

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-2171132563 is a prime.

It is a super-2 number, since 2×2171132563² = 9427633212237897938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171132569) 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, 18399370 + ... + 18399487.

It is an arithmetic number, because the mean of its divisors is an integer number (551982870).

Almost surely, 2^2171132563 is an apocalyptic number.

2171132563 is a deficient number, since it is larger than the sum of its proper divisors (36798917).

2171132563 is an equidigital number, since it uses as much as digits as its factorization.

2171132563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36798916.

The product of its digits is 7560, while the sum is 31.

The square root of 2171132563 is about 46595.4135403904. The cubic root of 2171132563 is about 1294.8777855576.

The spelling of 2171132563 in words is "two billion, one hundred seventy-one million, one hundred thirty-two thousand, five hundred sixty-three".