2162171553 has 8 divisors (see below), whose sum is σ = 2960811648. Its totient is φ = 1402489584.

The previous prime is 2162171527. The next prime is 2162171563. The reversal of 2162171553 is 3551712612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2162171553 - 2⁵ = 2162171521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2162171563) 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 in 7 ways as a sum of consecutive naturals, for example, 9739401 + ... + 9739622.

It is an arithmetic number, because the mean of its divisors is an integer number (370101456).

Almost surely, 2^2162171553 is an apocalyptic number.

It is an amenable number.

2162171553 is a deficient number, since it is larger than the sum of its proper divisors (798640095).

2162171553 is a wasteful number, since it uses less digits than its factorization.

2162171553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19479063.

The product of its digits is 12600, while the sum is 33.

The square root of 2162171553 is about 46499.1564762201. The cubic root of 2162171553 is about 1293.0938605153.

The spelling of 2162171553 in words is "two billion, one hundred sixty-two million, one hundred seventy-one thousand, five hundred fifty-three".