7652221 has 4 divisors (see below), whose sum is σ = 7661952. Its totient is φ = 7642492.

The previous prime is 7652219. The next prime is 7652251. The reversal of 7652221 is 1222567.

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 7652221 - 2¹ = 7652219 is a prime.

It is a Duffinian number.

7652221 is a lucky number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7652251) 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, 3571 + ... + 5296.

It is an arithmetic number, because the mean of its divisors is an integer number (1915488).

Almost surely, 2^7652221 is an apocalyptic number.

It is an amenable number.

7652221 is a deficient number, since it is larger than the sum of its proper divisors (9731).

7652221 is an equidigital number, since it uses as much as digits as its factorization.

7652221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9730.

The product of its digits is 1680, while the sum is 25.

The square root of 7652221 is about 2766.2648101727. The cubic root of 7652221 is about 197.0588004193.

Adding to 7652221 its reverse (1222567), we get a palindrome (8874788).

The spelling of 7652221 in words is "seven million, six hundred fifty-two thousand, two hundred twenty-one".