8051021 has 4 divisors (see below), whose sum is σ = 8782944. Its totient is φ = 7319100.

The previous prime is 8051011. The next prime is 8051033. The reversal of 8051021 is 1201508.

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 8051021 - 2⁶ = 8050957 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8051011) 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, 365945 + ... + 365966.

It is an arithmetic number, because the mean of its divisors is an integer number (2195736).

Almost surely, 2^8051021 is an apocalyptic number.

It is an amenable number.

8051021 is a deficient number, since it is larger than the sum of its proper divisors (731923).

8051021 is a wasteful number, since it uses less digits than its factorization.

8051021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731922.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 8051021 is about 2837.4321137254. The cubic root of 8051021 is about 200.4242743201.

Adding to 8051021 its reverse (1201508), we get a palindrome (9252529).

The spelling of 8051021 in words is "eight million, fifty-one thousand, twenty-one".