30535221 has 4 divisors (see below), whose sum is σ = 40713632. Its totient is φ = 20356812.

The previous prime is 30535207. The next prime is 30535259. The reversal of 30535221 is 12253503.

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 30535221 - 2⁵ = 30535189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30535721) 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, 5089201 + ... + 5089206.

It is an arithmetic number, because the mean of its divisors is an integer number (10178408).

Almost surely, 2^30535221 is an apocalyptic number.

It is an amenable number.

30535221 is a deficient number, since it is larger than the sum of its proper divisors (10178411).

30535221 is a wasteful number, since it uses less digits than its factorization.

30535221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178410.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 30535221 is about 5525.8683480517. The cubic root of 30535221 is about 312.5602094120.

Adding to 30535221 its reverse (12253503), we get a palindrome (42788724).

The spelling of 30535221 in words is "thirty million, five hundred thirty-five thousand, two hundred twenty-one".