8021057 has 4 divisors (see below), whose sum is σ = 8750256. Its totient is φ = 7291860.

The previous prime is 8021053. The next prime is 8021063. The reversal of 8021057 is 7501208.

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 8021057 - 2² = 8021053 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8021053) 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, 364583 + ... + 364604.

It is an arithmetic number, because the mean of its divisors is an integer number (2187564).

Almost surely, 2^8021057 is an apocalyptic number.

It is an amenable number.

8021057 is a deficient number, since it is larger than the sum of its proper divisors (729199).

8021057 is a wasteful number, since it uses less digits than its factorization.

8021057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729198.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 8021057 is about 2832.1470653905. The cubic root of 8021057 is about 200.1753212674.

The spelling of 8021057 in words is "eight million, twenty-one thousand, fifty-seven".