30225921 has 12 divisors (see below), whose sum is σ = 44298576. Its totient is φ = 18318520.

The previous prime is 30225919. The next prime is 30225931. The reversal of 30225921 is 12952203.

It is not a de Polignac number, because 30225921 - 2¹ = 30225919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30225891 and 30225900.

It is not an unprimeable number, because it can be changed into a prime (30225901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41271 + ... + 41996.

It is an arithmetic number, because the mean of its divisors is an integer number (3691548).

Almost surely, 2^30225921 is an apocalyptic number.

It is an amenable number.

30225921 is a deficient number, since it is larger than the sum of its proper divisors (14072655).

30225921 is a wasteful number, since it uses less digits than its factorization.

30225921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83292 (or 83281 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 30225921 is about 5497.8105642155. The cubic root of 30225921 is about 311.5012886556.

The spelling of 30225921 in words is "thirty million, two hundred twenty-five thousand, nine hundred twenty-one".