7852321 has 4 divisors (see below), whose sum is σ = 8000532. Its totient is φ = 7704112.

The previous prime is 7852319. The next prime is 7852349. The reversal of 7852321 is 1232587.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5934096 + 1918225 = 2436^2 + 1385^2 .

It is a cyclic number.

It is not a de Polignac number, because 7852321 - 2¹ = 7852319 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7852321.

It is not an unprimeable number, because it can be changed into a prime (7852421) 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, 74026 + ... + 74131.

It is an arithmetic number, because the mean of its divisors is an integer number (2000133).

Almost surely, 2^7852321 is an apocalyptic number.

It is an amenable number.

7852321 is a deficient number, since it is larger than the sum of its proper divisors (148211).

7852321 is a wasteful number, since it uses less digits than its factorization.

7852321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148210.

The product of its digits is 3360, while the sum is 28.

The square root of 7852321 is about 2802.1993148240. The cubic root of 7852321 is about 198.7616904374.

The spelling of 7852321 in words is "seven million, eight hundred fifty-two thousand, three hundred twenty-one".