2021792171 has 8 divisors (see below), whose sum is σ = 2311131360. Its totient is φ = 1732580928.

The previous prime is 2021792153. The next prime is 2021792183. The reversal of 2021792171 is 1712971202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021792171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021792191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4685 + ... + 63761.

It is an arithmetic number, because the mean of its divisors is an integer number (288891420).

Almost surely, 2^2021792171 is an apocalyptic number.

2021792171 is a deficient number, since it is larger than the sum of its proper divisors (289339189).

2021792171 is an equidigital number, since it uses as much as digits as its factorization.

2021792171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63973.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 2021792171 is about 44964.3433289090. The cubic root of 2021792171 is about 1264.4805985269.

The spelling of 2021792171 in words is "two billion, twenty-one million, seven hundred ninety-two thousand, one hundred seventy-one".