2021052817 has 4 divisors (see below), whose sum is σ = 2309774656. Its totient is φ = 1732330980.

The previous prime is 2021052809. The next prime is 2021052823. The reversal of 2021052817 is 7182501202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021052817 - 2³ = 2021052809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021052617) 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, 144360909 + ... + 144360922.

It is an arithmetic number, because the mean of its divisors is an integer number (577443664).

Almost surely, 2^2021052817 is an apocalyptic number.

It is an amenable number.

2021052817 is a deficient number, since it is larger than the sum of its proper divisors (288721839).

2021052817 is an equidigital number, since it uses as much as digits as its factorization.

2021052817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288721838.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 2021052817 is about 44956.1210181661. The cubic root of 2021052817 is about 1264.3264427591.

The spelling of 2021052817 in words is "two billion, twenty-one million, fifty-two thousand, eight hundred seventeen".