30325221 has 6 divisors (see below), whose sum is σ = 43803110. Its totient is φ = 20216808.

The previous prime is 30325219. The next prime is 30325231. The reversal of 30325221 is 12252303.

It can be written as a sum of positive squares in only one way, i.e., 27720225 + 2604996 = 5265^2 + 1614^2 .

It is not a de Polignac number, because 30325221 - 2¹ = 30325219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30325194 and 30325203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30325231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1684726 + ... + 1684743.

Almost surely, 2^30325221 is an apocalyptic number.

It is an amenable number.

30325221 is a deficient number, since it is larger than the sum of its proper divisors (13477889).

30325221 is a wasteful number, since it uses less digits than its factorization.

30325221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369475 (or 3369472 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30325221 is about 5506.8340269160. The cubic root of 30325221 is about 311.8420366552.

Adding to 30325221 its reverse (12252303), we get a palindrome (42577524).

The spelling of 30325221 in words is "thirty million, three hundred twenty-five thousand, two hundred twenty-one".