8021315 has 4 divisors (see below), whose sum is σ = 9625584. Its totient is φ = 6417048.

The previous prime is 8021291. The next prime is 8021323. The reversal of 8021315 is 5131208.

8021315 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8021315 - 2²⁰ = 6972739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802127 + ... + 802136.

It is an arithmetic number, because the mean of its divisors is an integer number (2406396).

Almost surely, 2^8021315 is an apocalyptic number.

8021315 is a deficient number, since it is larger than the sum of its proper divisors (1604269).

8021315 is a wasteful number, since it uses less digits than its factorization.

8021315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604268.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 8021315 is about 2832.1926135064. The cubic root of 8021315 is about 200.1774674799.

The spelling of 8021315 in words is "eight million, twenty-one thousand, three hundred fifteen".