8352021 has 4 divisors (see below), whose sum is σ = 11136032. Its totient is φ = 5568012.

The previous prime is 8352007. The next prime is 8352031. The reversal of 8352021 is 1202538.

8352021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8352021 - 2²² = 4157717 is a prime.

It is a Duffinian number.

It is a Curzon number.

8352021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8352031) 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, 1392001 + ... + 1392006.

It is an arithmetic number, because the mean of its divisors is an integer number (2784008).

Almost surely, 2^8352021 is an apocalyptic number.

It is an amenable number.

8352021 is a deficient number, since it is larger than the sum of its proper divisors (2784011).

8352021 is a wasteful number, since it uses less digits than its factorization.

8352021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784010.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 8352021 is about 2889.9863321476. The cubic root of 8352021 is about 202.8915029271.

Adding to 8352021 its reverse (1202538), we get a palindrome (9554559).

The spelling of 8352021 in words is "eight million, three hundred fifty-two thousand, twenty-one".